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ldesnogu 2016-02-17 09:22

[QUOTE=VictordeHolland;426593]Yes it would, but it wouldn't change the outcome by much. The E7400_Ubuntu machine is not running at the moment (it uses too much electricity and I haven't got the space for it). I could have compared it with a i5 2500k or a i7 3770k both running P95 under Win7. Both of them have AVX, thus that would make the difference even larger. I don't think there is more than single digit % difference in performance between Mprime and MLucas on pre-AVX machines. [/QUOTE]
I didn't realize Ernst had reached that point! Are there benchmarks on various CPU of Mlucas?

FWIW I would have expected the U2 to be about 4 times slower than your C2D, not >6 times, hence my original question.

[QUOTE]Running GMP-ECM on the Odroid-U2 probably makes more sense.[/QUOTE]
That's likely :smile:

Xyzzy 2016-02-23 03:57

[url]http://arstechnica.com/gadgets/2016/02/arms-cortex-a32-is-a-tiny-cpu-for-wearables-and-raspberry-pi-like-boards/[/url]

[QUOTE]32-bit-only ARMv8 chip is designed to consume as little as 4mW of power.[/QUOTE]

henryzz 2016-02-29 12:31

[url]https://shop.pimoroni.com/products/raspberry-pi-3[/url]
Should be a fair bit faster than the previous model. Still has only 1GB of memory though so will struggle to have 4 programs running at once.

ET_ 2016-02-29 14:29

[QUOTE=henryzz;427762][url]https://shop.pimoroni.com/products/raspberry-pi-3[/url]
Should be a fair bit faster than the previous model. Still has only 1GB of memory though so will struggle to have 4 programs running at once.[/QUOTE]

It would be noce to test it as a "parallel" siever using ppsieve, npsieve or MMpsieve, all having a very small memory footprint...

fivemack 2016-02-29 16:45

My TX1 has arrived! I will have a play with it this evening.

The slightly silly feature is that it is a mini-ITX motherboard with a camera module on the motherboard; silly in that I'm going to be putting it into a case (the one my Xeon-D board was in before I sold it) and the camera will have little to look at.

Amusingly the heatsink on the Jetson TX1 is larger than the one on the Xeon D-1540.

ldesnogu 2016-02-29 18:15

[QUOTE=fivemack;427772]My TX1 has arrived! I will have a play with it this evening.[/quote]
Great :smile: I'm resisting the temptation until a 64-bit user filesystem is officially released including CUDA support.

[quote]Amusingly the heatsink on the Jetson TX1 is larger than the one on the Xeon D-1540.[/QUOTE]
I hope there's no need for a fan even when pushing the GPU hard.

paulunderwood 2016-02-29 19:22

[QUOTE=henryzz;427762][url]https://shop.pimoroni.com/products/raspberry-pi-3[/url]
Should be a fair bit faster than the previous model. Still has only 1GB of memory though so will struggle to have 4 programs running at once.[/QUOTE]

It would be nice for me to have such a device -- 64-bit capable. A lot of my code is 64 bit integer, and the power draw of the Pi-3 is attractive to me. I will see what the competition, such as Odroid, has to offer over the coming months :smile:

fivemack 2016-02-29 20:55

I have got the TX1 out of its box, and it sits there and runs 32-bit Linux perfectly happily; the first thing I did was to build gmp-ecm for it, which is no faster than it was on the TK1 presumably because it's a 32-bit binary and can't use the wide multiply instructions. Running four threads of gmp-ecm is not enough to make the fan turn.

fivemack 2016-03-01 10:14

GMP-ECM stage 2 memory tradeoff
 
Memory usage by GMP-ECM looks to be roughly quantised in powers of two times 100MB. Testing on a Xeon box with

[code]
echo "(2^909-1)/2305340678742833263/341117531003194129" | /usr/bin/time ecm -v -maxmem 120 -c 1 1e4 B2 [/code]

[code]
B2 maxmem usedmem time/s time ratio
1e11 none 407M 54 (1.00)
1e11 120 99M 85 1.57
1e12 none 801M 373.665 (1.00)
1e12 400 408M 589.291 1.58
1e12 200 201M 1420.189 3.80
1e12 100 100M 2396.19 6.41
1e13 none 3260M 1067.27 (1.00)
1e13 100 103M 21176.37 19.84
[/code]

So this sounds as if a sufficient number of sufficiently cheap low-memory machines might be a reasonable adjunct to a GPU for ECM.

ET_ 2016-03-01 10:34

[QUOTE=fivemack;427840]Memory usage by GMP-ECM looks to be roughly quantised in powers of two times 100MB. Testing on a Xeon box with

So this sounds as if a sufficient number of sufficiently cheap low-memory machines might be a reasonable adjunct to a GPU for ECM.[/QUOTE]

The GPU doing the B1 in parallel and the TX1/Pi3 doing B2 in increasing blocks?

ldesnogu 2016-03-01 17:35

[QUOTE=fivemack;427796]I have got the TX1 out of its box, and it sits there and runs 32-bit Linux perfectly happily; the first thing I did was to build gmp-ecm for it, which is no faster than it was on the TK1 presumably because it's a 32-bit binary and can't use the wide multiply instructions. Running four threads of gmp-ecm is not enough to make the fan turn.[/QUOTE]
My understanding is that the kernel is 64-bit. You could perhaps try to cross-compile and statically link to get a runnable 64-bit executable?

VictordeHolland 2016-03-02 23:25

Hardkernel Odroid-C2 released
[URL]http://www.hardkernel.com/main/products/prdt_info.php?g_code=G145457216438[/URL]
$40 (probably excluding shipping)

-Amlogic ARM 4x Cortex-A53 @2GHz
-Mali-450 GPU (3 Pixel-processors + 2 Vertex shader processors) @700MHz
-produced on 28nm
-2GB DDR3 32bit @912MHz
-Gigabit Ethernet
-HDMI 2.0 4K/60Hz display
-H265 4K/60FPS and H264 4K/30FPS capable VPU
-eMMC5.0 / UHS-1 MicroSD Card slot
-4x USB 2.0
-Infrared Receiver
-Ubuntu 16.04 or Android 5.1 Lollipop (based on Kernel 3.14)
-85 x 56 mm
-40 (metric) grams

Estimated power usage 2-5W for average operation.
A bit better specs than the Raspberry Pi3, but also a few dollars more and a smaller userbase. I might be interesting to play with it for a few bucks :smile: .

[edit2]
Just noticed you can order from a shop in Germany, that is much better than my order for the Odroid-U2. I ordered the Odroid-U2 from their website and it took a long time before it arrived. I also had to pay import taxes, which UPS charged me a hefty 20 euros handeling fee for.

ET_ 2016-03-03 12:01

[QUOTE=VictordeHolland;427959]Hardkernel Odroid-C2 released

A bit better specs than the Raspberry Pi3, but also a few dollars more and a smaller userbase. I might be interesting to play with it for a few bucks :smile: .
[/QUOTE]

Let us know your impressions, as a number cruncher :smile:

henryzz 2016-03-03 20:12

[QUOTE=VictordeHolland;427959]Hardkernel Odroid-C2 released
[URL]http://www.hardkernel.com/main/products/prdt_info.php?g_code=G145457216438[/URL]
$40 (probably excluding shipping)

-Amlogic ARM 4x Cortex-A53 @2GHz
-Mali-450 GPU (3 Pixel-processors + 2 Vertex shader processors) @700MHz
-produced on 28nm
-2GB DDR3 32bit @912MHz
-Gigabit Ethernet
-HDMI 2.0 4K/60Hz display
-H265 4K/60FPS and H264 4K/30FPS capable VPU
-eMMC5.0 / UHS-1 MicroSD Card slot
-4x USB 2.0
-Infrared Receiver
-Ubuntu 16.04 or Android 5.1 Lollipop (based on Kernel 3.14)
-85 x 56 mm
-40 (metric) grams

Estimated power usage 2-5W for average operation.
A bit better specs than the Raspberry Pi3, but also a few dollars more and a smaller userbase. I might be interesting to play with it for a few bucks :smile: .

[edit2]
Just noticed you can order from a shop in Germany, that is much better than my order for the Odroid-U2. I ordered the Odroid-U2 from their website and it took a long time before it arrived. I also had to pay import taxes, which UPS charged me a hefty 20 euros handeling fee for.[/QUOTE]
That looks much better for us than the raspberry pi.

Xyzzy 2016-03-13 23:52

[url]http://arstechnica.com/gadgets/2016/03/review-much-improved-iris-gpu-makes-the-skylake-nuc-a-major-upgrade/[/url]

:truck:

Xyzzy 2016-03-17 03:14

[url]http://arstechnica.com/gadgets/2016/03/intels-high-end-quad-core-nuc-ships-in-may-for-650/[/url]

[QUOTE]The new NUC6i7KYK, codenamed "Skull Canyon," includes a 2.6GHz (3.5GHz Turbo) 45W quad-core Core i7-6770HQ—not the fastest Skylake laptop chip that Intel can sell you, but definitely one of the fastest.[/QUOTE]

ldesnogu 2016-03-17 05:15

AnandTech concluded this about the NUC6i5SYK:

[URL]http://www.anandtech.com/show/10121/intel-nuc6i5syk-skylake-ucff-pc-review[/URL]
[quote]Overall, our experience with the NUC6i5SYK was not what we have come to expect from a typical Intel product. Unless one wants to be an adventurous beta tester, we would suggest waiting for Intel to resolve all pending issues with the Skylake NUC before contemplating a purchase. Hopefully, the Iris Pro-equipped Skull Canyon NUC (with Thunderbolt 3 integrated) will fare better when it comes to the market.[/quote]

fivemack 2016-04-12 15:50

[QUOTE=VictordeHolland;427959]Hardkernel Odroid-C2 released
[URL]http://www.hardkernel.com/main/products/prdt_info.php?g_code=G145457216438[/URL]
$40 (probably excluding shipping)
[/quote]

I've got one of these on the way from the German retailer; should arrive end of the month. At which point I have a stable of five machines with five recent ARM architectures (Cortex-A7 RPi2, Cortex-A9 ODroid-X, Cortex-A15 Jetson TK1, Cortex-A53 ODroid-C2, Cortex-A57 Jetson TX1) and should start working out some more sensible way to store, network and use them.

VictordeHolland 2016-04-12 16:53

[QUOTE=fivemack;431391]I've got one of these on the way from the German retailer; should arrive end of the month. At which point I have a stable of five machines with five recent ARM architectures (Cortex-A7 RPi2, Cortex-A9 ODroid-X, Cortex-A15 Jetson TK1, Cortex-A53 ODroid-C2, Cortex-A57 Jetson TX1) and should start working out some more sensible way to store, network and use them.[/QUOTE]
Cool, please share your experiences/issues and performace/benchmarks with us :).

ldesnogu 2016-06-23 11:24

[QUOTE=fivemack;427796]I have got the TX1 out of its box, and it sits there and runs 32-bit Linux perfectly happily; the first thing I did was to build gmp-ecm for it, which is no faster than it was on the TK1 presumably because it's a 32-bit binary and can't use the wide multiply instructions. Running four threads of gmp-ecm is not enough to make the fan turn.[/QUOTE]
Now that 64-bit is available, did you retry?

fivemack 2016-06-23 14:39

I have a weekend of 64-bit ARM Linux planned (Raspberry Pi 3 has arrived at the office for a slightly different experiment, TX1 and Odroid-C2 are at home). Just hoping that being repeatedly walked on by the cat while turned off is not bad for devboards.

ldesnogu 2016-06-24 06:01

[QUOTE=fivemack;436768]I have a weekend of 64-bit ARM Linux planned (Raspberry Pi 3 has arrived at the office for a slightly different experiment, TX1 and Odroid-C2 are at home).[/QUOTE]
Cool, can't wait to see what you find!

I really need to get my hands on a proper 64-bit platform that would be both easily hackable and not too pricey. TX1 is too expensive and I want something more powerful than A53 to play with.

[QUOTE]Just hoping that being repeatedly walked on by the cat while turned off is not bad for devboards.[/QUOTE]
Use a hair dryer to remove cat hairs before turning them on :smile:

Xyzzy 2016-07-11 14:55

[url]http://deals.dell.com/mpp/productdetail/1up[/url]

$97.99

xilman 2016-08-04 18:09

The Raspberry Pi Zero is very small, dirt cheap and takes hardly any power, so I'm thinking about building an ECM engine from a bunch of them.

Does anyone here have a Pi Zero and would be willing to benchmark GMP-ECM on it?

Buying a fully functional one (i.e. with PSU and storage) for myself would cost less than a gallon of beer but I'd like to avoid the latency if possible.

Also considering the Pi-3 if its price/performance is better than the Zero.

At [url]http://cpc.farnell.com/mksp2-raspberry-pi-boards-and-noobs-os[/url] the Pi-3 is £31.19, or £38.72 with storage included.

[url]https://www.alibaba.com/product-detail/Raspberry-Pi-Zero_60391789003.html?spm=a2700.7724857.0.0.BbCy3v[/url] offers the Pi Zero at $1.30, which is about £2 after import duty and VAT. An 8G SD card is available for less than £3.

Does a Pi 3 offer at least 38.72 / (2+3) ~ 8 times the performance of a Pi Zero?

Paul

ldesnogu 2016-08-04 19:02

[QUOTE=xilman;439339]Does a Pi 3 offer at least 38.72 / (2+3) ~ 8 times the performance of a Pi Zero?[/QUOTE]
If I'd hazard a guess I'd say the Pi 3 will be that much faster or close: 1 GB vs 512 MB, 4 cores @1.2 Ghz vs 1 core @1 Ghz, and more important for multi-precision code, 64-bit vs 32-bit (provided Pi 3 now comes with a 64-bit userland filesystem). But that's only a guess :smile:

Can GMP-ECM use multiple threads?

Mark Rose 2016-08-04 20:11

The Pi Zero has the same single-core CPU as the original A & B models, but clocked at 1 GHz instead of 700 MHz.

The Pi 2 has the quad-core [url=https://en.wikipedia.org/wiki/ARM_Cortex-A7]Cortex-A7[/url] and the Pi 3 has the [url=https://en.wikipedia.org/wiki/ARM_Cortex-A53]Cortex-A53[/url]. The latter is 64-bit while the other CPUs are 32-bit.

Xyzzy 2016-08-04 21:42

We are no longer using our NUC. If someone wants it for a good price, please PM us. Thanks!

:mike:

Xyzzy 2016-11-06 18:35

[URL]http://arstechnica.com/gadgets/2016/11/zotac-zbox-en1060-review-nvidia/[/URL][QUOTE]Inside its tiny 20cm-by-20cm footprint sits a quad-core Intel Core i5 processor and an Nvidia GTX 1060 graphics card, giving it enough graphics grunt to power games at the highest settings, even at resolutions above 1080p.[/QUOTE]

Xyzzy 2017-01-05 17:09

[url]http://arstechnica.com/gadgets/2017/01/intels-compute-card-is-a-pc-that-can-fit-in-your-wallet/[/url][QUOTE]Intel's latest effort in this arena is its new "Compute Card," a small 94.5mm by 55mm by 5mm slab that includes a CPU and GPU, RAM, storage, and wireless connectivity.[/QUOTE]

Xyzzy 2017-02-15 15:54

[URL]http://www.omgubuntu.co.uk/2017/02/gpd-pocket-ubuntu-7-inch-laptop-indiegogo[/URL][QUOTE]It took the little 7-inch laptop less than 7 hours to leap over its $200,000 fixed funding goal.[/QUOTE]

VictordeHolland 2017-03-22 15:35

Qualcomm Snapdragon 835 preview:
[URL]http://www.anandtech.com/show/11201/qualcomm-snapdragon-835-performance-preview[/URL]

Semi-custom Kryo 280 cores (heavily based on ARM Cortex A73) on Samsungs 10nm LPE (Low Power Early).
Not blowing away the competition, but in most benchmarks an improvement over the 820.

It probably won't make it to single board computers, but probably will be in the Samsung Galaxy S8 (the USA version).

bgbeuning 2017-03-23 02:58

TX2
 
7 Watt and 2 tera flops

[URL="http://www.nvidia.com/object/embedded-systems-dev-kits-modules.html"]TX2 dev kit[/URL]

[URL="http://seekingalpha.com/article/4057051-nvidia-happened-san-francisco-knew"]TX2 review[/URL]

ET_ 2017-03-23 07:16

[QUOTE=bgbeuning;455327]7 Watt and 2 tera flops

[URL="http://www.nvidia.com/object/embedded-systems-dev-kits-modules.html"]TX2 dev kit[/URL]

[URL="http://seekingalpha.com/article/4057051-nvidia-happened-san-francisco-knew"]TX2 review[/URL][/QUOTE]

$299 vs $39...

kladner 2017-03-23 18:10

[QUOTE=Xyzzy;446613][URL]http://arstechnica.com/gadgets/2016/11/zotac-zbox-en1060-review-nvidia/[/URL][/QUOTE]
Sorry for the long OT post. :redface:
In revisiting the Ars review, I was struck by this phrase, "wallet-busting desktop replacements aside—I'm looking at you, [URL="https://arstechnica.com/gadgets/2016/11/zotac-zbox-en1060-review-nvidia/Razer%20Blade%20Pro"]Razer Blade Pro[/URL]". I have a friend who is drooling over this thing. [url]http://www.laptopmag.com/reviews/laptops/razer-blade-2012[/url].
When he told me, my reaction was, "for $2500 you could probably set up a dual Xeon system." Now that has caught his attention, and he is asking for advice and details.

I am angling him toward a single hex core i7 on x99 chipset. I was being a bit flippant when I said dual Xeon. I strongly suspect that it would be overkill, even if he does want to render 4K videos really fast.

Mark Rose 2017-03-23 19:29

A 1700 overclocked to 3.9 GHz will give you as much performance for half that. You can also spend a little more an get an 1800X that will do 4.1 GHz on all 8 cores.

Still new technology though.

[YOUTUBE]UIIb5uZfukU[/YOUTUBE]

kladner 2017-03-24 05:42

1 Attachment(s)
[QUOTE=Mark Rose;455379]A 1700 overclocked to 3.9 GHz will give you as much performance for half that. You can also spend a little more an get an 1800X that will do 4.1 GHz on all 8 cores.

Still new technology though.
[/QUOTE]
The chips I was promoting are in this class-
[URL]http://www.microcenter.com/search/search_results.aspx?Ntk=all&sortby=match&N=4294966995+4294964566+4294935744+4294916117&myStore=true[/URL]
The video certainly makes a good pitch for Ryzen, though I really doubt my friend will spring for dual 1080s or Titan Xs.
This guy is probably running one of the early Intel quads- does 6600 sound likely? I don't remember his current graphics arrangement. My thought, and words were that a Broadwell hex core with 4 channel memory would "blow your socks off.'
Last exchange is attached.
To thread moderator: Sorry again for the digression. Move this to the Ryzen thread, maybe.
I guess I am just now leery of AMD. I ran with them for a long time. But they disappointed me a lot over the years following Athlon and Athlon64.

henryzz 2017-03-24 14:46

Q6600 was the first quad(in reality a dual dual) It was very popular back in the day.

xilman 2017-03-24 18:33

[QUOTE=henryzz;455416]Q6600 was the first quad(in reality a dual dual) It was very popular back in the day.[/QUOTE]SWBO's Q6600 is on its last legs and we started searching for a replacement today. If it wasn't for its unfortunate tendency to lock up and/or refuse to boot she would continue to be very pleased with its performance.

henryzz 2017-03-25 16:02

[QUOTE=xilman;455423]SWBO's Q6600 is on its last legs and we started searching for a replacement today. If it wasn't for its unfortunate tendency to lock up and/or refuse to boot she would continue to be very pleased with its performance.[/QUOTE]
What do you believe the issue is? I have a spare Q6600 that was recently retired. I don't know what was causing my issues with it before it died. I suspect that a recent power supply failure had damaged the motherboard.
You are welcome to try the motherboard(P5K-VM) or cpu (Q6600 G0 stepping).

The system probably is just getting too old to keep fussing around with it though.

3mg4 2017-04-20 15:44

Somebody interested in this one?

[url]https://www.parallella.org/board/[/url]

Zynq-Z7010 or Z7020 Dual-core ARM A9 CPU
16-core Epiphany Coprocessor
1GB RAM
MicroSD Card
USB 2.0
Up to 48 GPIO signal
Gigabit Ethernet
HDMI port
Linux Operating System
54mm x 87mm form factor

When will Prime95 run on ARM, i would have no problem to run some of the smaller boards at home, but i have a problem running a hole PC 24/7 at home (electricity is not so cheap in Europe, at least my country...)

xilman 2017-04-20 17:30

[QUOTE=3mg4;457105]Somebody interested in this one?

[url]https://www.parallella.org/board/[/url]

Zynq-Z7010 or Z7020 Dual-core ARM A9 CPU
16-core Epiphany Coprocessor
1GB RAM
MicroSD Card
USB 2.0
Up to 48 GPIO signal
Gigabit Ethernet
HDMI port
Linux Operating System
54mm x 87mm form factor

When will Prime95 run on ARM, i would have no problem to run some of the smaller boards at home, but i have a problem running a hole PC 24/7 at home (electricity is not so cheap in Europe, at least my country...)[/QUOTE]I have four. They are presently powered down because something has broke. The USB interface on the Parallella boards has never worked reliably. Check out the forum for many, many complaints about this.

Added in edit: the Epiphany is really intended for DSP workloads. It is 32-bit only and has neither division instructions nor good support for multiple precision arithmetic.

3mg4 2017-04-21 16:46

[QUOTE=xilman;457118]I have four. They are presently powered down because something has broke. The USB interface on the Parallella boards has never worked reliably. Check out the forum for many, many complaints about this.

Added in edit: the Epiphany is really intended for DSP workloads. It is 32-bit only and has neither division instructions nor good support for multiple precision arithmetic.[/QUOTE]

Ahh I see, i just found this on the internet the other day and thought it may be interesting

Xyzzy 2020-05-28 12:50

[url]https://techgage.com/article/intel-nuc-9-pro-quartz-canyon-workstation-review/[/url]

ewmayer 2020-05-28 19:00

[QUOTE=Xyzzy;546651][url]https://techgage.com/article/intel-nuc-9-pro-quartz-canyon-workstation-review/[/url][/QUOTE]

Neat-o, but I can fit 4 of the avx-512 Cannonlake NUCs of the kind KenK and I ordered in less room, for a smidge over $1000. But for the man who's got $3000+ burning a hole in his pocket...

kriesel 2020-05-28 19:20

[QUOTE=ewmayer;546675]Neat-o, but I can fit 4 of the avx-512 Cannonlake NUCs of the kind KenK and I ordered in less room, for a smidge over $1000. But for the man who's got $3000+ burning a hole in his pocket...[/QUOTE]
$3K is a low end motherboard, cpu & cooler, adequate ram, open frame chassis with complement of fans, power supply, set of fan guards to protect the owner's fingers and the cat's nose and paws, 4 Radeon VII gpus, OS license, and some left over for the power bill.

ewmayer 2020-05-28 19:33

[QUOTE=kriesel;546678]$3K is a low end motherboard, cpu & cooler, adequate ram, open frame chassis with complement of fans, power supply, set of fan guards to protect the owner's fingers and the cat's nose and paws, 4 Radeon VII gpus, OS license, and some left over for the power bill.[/QUOTE]

That recipe sounds vaguely familiar, though I have a measly 3 R7s, the maximum I could accommodate without expanding the footprint (really, 18"L x 12"W x 7"H 3D bounding box) of said build and allowing plenty of airflow to the GPUs.

I notice you mention fan guards - I've been looking for R7-suitable (or specific) ones, w/o success. Can you provide link(s)?

kriesel 2020-05-28 20:09

[QUOTE=ewmayer;546680]That recipe sounds vaguely familiar, though I have a measly 3 R7s, the maximum I could accommodate without expanding the footprint (really, 18"L x 12"W x 7"H 3D bounding box) of said build and allowing plenty of airflow to the GPUs.

I notice you mention fan guards - I've been looking for R7-suitable (or specific) ones, w/o success. Can you provide link(s)?[/QUOTE]I went with an 8-gpu-nominal frame and 6-slot motherboard recently, for extra/adequate space. 120mm fan guards for the front-mounted, (direct mount to normal plastic case fans) Some of the 6 front-mounted fans are exposed and will get guards front and back for safety.
qty 10 [URL]https://www.ebay.com/itm/Lot-of-10-Chrome-Fan-Guard-for-120MM-Axial-Fan/332335416149[/URL]
qty 4 [URL]https://www.ebay.com/itm/4pcs-120mm-Chrome-Metal-Computer-PC-Fan-Grill-Mounting-Finger-Guard-Protection/271653618206[/URL]

80mm for some cpu coolers qty 5 (Will require some custom mounting;; purpose is to keep straying cables away from the blades)
[URL]https://www.ebay.com/itm/80mm-Wire-Computer-Case-Cooling-Fan-Grill-Guard-Black-Set-of-Five/153425613223[/URL]

For gpu-face fans, won't your frame-surround screen handle that?
I suppose you could tape some 80mm guards in place, 3 per RadeonVII.

ewmayer 2020-05-28 21:14

[QUOTE=kriesel;546683]80mm for some cpu coolers qty 5 (Will require some custom mounting;; purpose is to keep straying cables away from the blades)
[URL]https://www.ebay.com/itm/80mm-Wire-Computer-Case-Cooling-Fan-Grill-Guard-Black-Set-of-Five/153425613223[/URL]

For gpu-face fans, won't your frame-surround screen handle that?
I suppose you could tape some 80mm guards in place, 3 per RadeonVII.[/QUOTE]
I decided against a custom mesh-screen surround, instead going with a pair of galss-top monitor stands (pair because max-height = 4", will flip bottom one upside down and epoxy or screws the 4 foot-bottoms to this of the top one, creating an 8" glass-top-and-bottom open-sided enclosure. Only the R7 on the extreme left end of the frame needs the fan guards, so 3 will suffice.

Thanks 4 the links - I contacted seller to see if they came with mounting screws, he said no, so since I was gonna need to order some kind of PC-screw-set anyway, ordered the following 2 items on Amazon:

[url]https://www.amazon.com/Uxcell-a15111200ux1600-Computer-Finger-Silver/dp/B01AGA9VTO/[/url] - Amzn only had the $4.99 5-pack in black, and 10-pack leaves plenty of extras for future use

[url]https://www.amazon.com/Sutemribor-Personal-Computer-Standoffs-Motherboard/dp/B07F71KFMQ/[/url] -- 300pc screw variety pack, I need the smallest-shortest for the fans.

I can cut a pair of 10"-long alu. strips from same batch I used for the custom floating-above-CPU mounting brackets for GPU #3 and use my handy-dandy drill press and tap&die set to create mounting holes for the fan-guard screws, then stick small pcs of 2-sided tape on the ends of the Alu. strips and use those to stick to the fan-side of the GPU.

Xyzzy 2020-11-02 15:22

[url]https://www.raspberrypi.org/products/raspberry-pi-400[/url]

paulunderwood 2020-11-02 15:55

[QUOTE=Xyzzy;561946][url]https://www.raspberrypi.org/products/raspberry-pi-400[/url][/QUOTE]

Neat. It just requires a modern monitor and maybe a huge USB HDD/SSD.

Xyzzy 2020-12-21 23:19

[URL]https://www.clockworkpi.com/devterm[/URL]

[URL]https://pocket.popcorncomputer.com/[/URL]

LaurV 2020-12-22 12:55

[QUOTE=Xyzzy;566926][URL]https://www.clockworkpi.com/devterm[/URL]

[URL]https://pocket.popcorncomputer.com/[/URL][/QUOTE]
We played for the last 2-3 weeks with a [URL="http://www.banana-pi.org/m64.html"]Banana Pi M64[/URL], together with other boards (read "versus"), to select the hardware for a future product for an industrial customer. It is amazing what that little board can do. The board itself is not a big deal, those guys have some better boards, but the CPU from Allwinner is a wonder, beating all the competition by far, for the peanuts it costs. My struggle was not with the hardware, I am "expert" at "metal" programming, but with the Linux (to which I suck, and the support is not much, compared with "other fruits" Pi-es around), but fortunately I have colleagues who know what to type in those terminals :razz:
It worth having a look, especially if your goal is not connecting it to mipi LCD and other strange hardware, but to make applications, i.e. use it as a learning computer, then give it a try. I mean, out-of-the-box, with a keyboard, mouse, hdmi monitor, install ubuntu or debian from the linked page, the board works very nice. Adding hardware to it and recompiling the linux, playing with the device tree, etc, that is [U]another[/U] story.
BTW, is Ernst's toy digesting ARM64 yet?

ewmayer 2020-12-23 20:03

[QUOTE=LaurV;566970]BTW, is Ernst's toy digesting ARM64 yet?[/QUOTE]

You'll need to be specific as to what you man by "toy". If you mean Mlucas, it's had Arm64 128-bit SIMD assembly support since 2017. I no longer run it my little Odroid because that is too slow, only currently running it on the last of the batch of 12 Samsung Galazy 7 Android broke-o-phones I bought in the used/for-parts market in early 2019.

ATM, based on test-compiles from Laurent Desnogues, am making some code-fiddles to try to get it to build using the Clang compiler on the new Apple M1 - identical instruction set, and I use an older version of Clang myself on my old Macbook classic where I do most of my code editing and proof-of-principle work, but the version of Clang on M1 is doing some macro-inlining-related optimizations - and lowering the -O* level did not cure this - which GCC-on-Arm64 does not do, and Laurent hit "ran out of registers" errors on a pair of core-FFT macros which max out the GCC macro-arglist limit of 30. Hopefully have something buildable by the new year.

Mark Rose 2020-12-30 03:48

[QUOTE=ewmayer;567153]You'll need to be specific as to what you man by "toy". If you mean Mlucas, it's had Arm64 128-bit SIMD assembly support since 2017. I no longer run it my little Odroid because that is too slow, only currently running it on the last of the batch of 12 Samsung Galazy 7 Android broke-o-phones I bought in the used/for-parts market in early 2019.

ATM, based on test-compiles from Laurent Desnogues, am making some code-fiddles to try to get it to build using the Clang compiler on the new Apple M1 - identical instruction set, and I use an older version of Clang myself on my old Macbook classic where I do most of my code editing and proof-of-principle work, but the version of Clang on M1 is doing some macro-inlining-related optimizations - and lowering the -O* level did not cure this - which GCC-on-Arm64 does not do, and Laurent hit "ran out of registers" errors on a pair of core-FFT macros which max out the GCC macro-arglist limit of 30. Hopefully have something buildable by the new year.[/QUOTE]

It seems the M1 has some undocumented instructions that may be useful for Mlucas: [url]https://gist.github.com/dougallj/7a75a3be1ec69ca550e7c36dc75e0d6f[/url]

ewmayer 2020-12-30 06:22

[QUOTE=Mark Rose;567695]It seems the M1 has some undocumented instructions that may be useful for Mlucas: [url]https://gist.github.com/dougallj/7a75a3be1ec69ca550e7c36dc75e0d6f[/url][/QUOTE]

Interesting, but ugh - that kind of nonportability is only worth it if it offers huge performance benefits for one's application.

Brief update re. Mlucas-on-M1: Laurent Desnogues has a gcc-under-brew build working, we are playing around to see what maximizes total throughput on the big+little processor pair. I need to ask him how much detail I may release publicly, for now let me just say that 4-threaded performance on the big core alone is well more than 10x that of my Odroid C2, clock-for-clock. (But the C2 ain't exactly world-beating, so that's not saying all that much, except "the M1 doesn't suck").

I finished debug of some code mods designed to accommodate clang-on-M1's tighter-than-gcc macro-#args constraint, tested on my Odroid but waiting to hear whether it solves his Clang build issues on M1. We want both build options to be able to compare timings, clearly - the asm shouldn't care too much, but all the surrounding C code might.

Xyzzy 2021-01-03 13:45

[url]https://blog.jmdawson.co.uk/lichee-nano-pi-will-it-run-debian/[/url]

LaurV 2021-01-04 10:26

[QUOTE=Xyzzy;568184][URL]https://blog.jmdawson.co.uk/lichee-nano-pi-will-it-run-debian/[/URL][/QUOTE]
:tu:

Xyzzy 2021-01-07 13:17

[url]https://www.crowdsupply.com/sutajio-kosagi/precursor[/url]

ldesnogu 2021-01-07 13:39

[QUOTE=Xyzzy;568644][URL]https://www.crowdsupply.com/sutajio-kosagi/precursor[/URL][/QUOTE]
What a lot of marketing BS! Their FPGA is not open source and the tools used to program the FPGA aren't either. How is that open and how can they prove anything then about security?

And 16 MB of RAM?

They also fail to mention there exist more powerful FPGA boards for half the price (for instance [URL="https://www.96boards.org/product/ultra96/"]this[/URL]).

That being said I like it :smile:

LaurV 2021-01-08 05:19

[QUOTE=ldesnogu;568646]That being said I like it :smile:[/QUOTE]
Nope, not so fast... Low res Mono LCD? When TFT modules with larger resolution cost [URL="https://www.aliexpress.com/wholesale?SearchText=tft+lcd+display&SortType=price_asc"]peanuts[/URL]? (scroll few pages to get to the interesting stuff)

Xyzzy 2021-03-23 13:19

[url]https://cutiepi.io/[/url]

Xyzzy 2021-04-26 12:35

[url]https://www.servethehome.com/cerebras-wse-2-and-cs-2-more-than-double/[/url]

Xyzzy 2021-07-22 12:22

[url]https://liliputing.com/2021/07/arms-plasticarm-is-a-flexible-microprocessor-made-from-plastic-rather-than-silicon.html[/url]

PhilF 2021-07-22 12:48

I wonder how (chemically) they get semiconductor action out of plastic. :question:

Viliam Furik 2021-07-22 13:10

The original article from ARM offers more insight.

[url]https://community.arm.com/developer/research/b/articles/posts/plasticarm-realising-the-full-potential-of-the-internet-of-things[/url]

LaurV 2021-07-23 02:34

[QUOTE=Xyzzy;574421][URL]https://cutiepi.io/[/URL][/QUOTE]
[U]Pre[/U]-order? It means they don't have it yet? And... Freaking power hungry... Not recommended.

[QUOTE]Initial test shows that with a 5000mAh battery, 50% display brightness, and WiFi connection, we have reached about 5 hours of [U]stand-by time[/U]. [/QUOTE]
(my underline). It means about... what? 20 minutes of full work time?

retina 2021-07-23 02:51

[QUOTE=LaurV;583803] And... Freaking power hungry... Not recommended.

[QUOTE]Initial test shows that with a 5000mAh battery, 50% display brightness, and WiFi connection, we have reached about 5 hours of [U]stand-by time[/U]. [/QUOTE]
(my underline). It means about... what? 20 minutes of full work time?[/QUOTE]That is terrible.

A 5Ah battery lasts 5h. Hmm, let's see, a tricky calculation of 5Ah/5h = 1A draw in standby. Yuck. :yucky:

Considering the weight of the battery and things, it would be more convenient to have a normal grain-of-sugar-size silicon CPU running at a few milli-amps and a much smaller battery.

LaurV 2021-07-23 03:23

Yeah, joking apart, is probably the LED backlight what takes 99% of the juice, and not the ARM cores. If you turn the backlight off it will last much longer. They probably formulated it bad, or the journalist didn't understand. But it is funny, nevertheless.

Xyzzy 2021-09-29 23:19

[url]https://www.kickstarter.com/projects/kenburns/thumby-the-tiny-playable-keychain[/url]

:mike:

paulunderwood 2021-10-13 20:21

[url]https://thepihut.com/products/argon-one-m-2-raspberry-pi-4-case[/url]

Boot a pi from an M2 drive + 2 full size HDMI sockets

diep 2021-10-14 22:16

[QUOTE=paulunderwood;590484][url]https://thepihut.com/products/argon-one-m-2-raspberry-pi-4-case[/url]

Boot a pi from an M2 drive + 2 full size HDMI sockets[/QUOTE]

That's very few to market. As it's a plastic gimmick - Normally injection molding machines run economically cheap producing something like this at a minimum of 2 million produced.

Not sure where in China they let this get manufactured - just couple of thousands to assemble is very little.


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