Unstable Ryzen 7950X

[James Heinrich]

Originally Posted by tuckerkao

When Prime95 is running the stage 1 of P-1 or PRP test on my Ryzen 7950X machine, it only used 0.3 Gb of RAM for some reason.
Prime95 displayed Out of Memory! and stopped P-1 after stage 1

Prime95 only uses lots of RAM during stage-2 of P-1 (and ECM). Right now running a PRP for example I see 184 MB used. This is normal. But your 0.3GB statement is suspicious as that's a default configuration. Under Options... | Resource Limits... check that your Daytime and Nighttime RAM allocation is appropriate (somewhere around 75% of physical installed RAM).

Originally Posted by tuckerkao

Using all 16 cores caused my Windows operating system to crash into the bluescreen.
I tried to find why Gerbicz errors keep occurring

You have something very wrong with your hardware. How hot is the CPU running?

Originally Posted by tuckerkao

Pminus1 with the recommended bounds from GPU72 typically take less time to complete.

Yes, doing things worse is usually faster. You can lower the bounds to near-zero and be done almost instantly, but that doesn't really benefit anyone. Please let Prime95 decide what bounds should be used based on the exponent status and your available RAM. The values shown on mersenne.ca are just a very rough estimate of typical values and should never override what Prime95 selects by itself.

[tuckerkao]

Originally Posted by James Heinrich

You have something very wrong with your hardware. How hot is the CPU running?

I'm not that good checking the BIOS data, maybe you can tell me what to look up.

I have ASUS Prime X670-P Motherboard. I've heard that Ryzen 7950X can go as high as 95°C which was what the AMD company advertised for. The bluescreen only showed up on Windows 11, I never had this problem again after downgrading the operating system back to Windows 10.

After increased the emergency memory GB/Worker to 7 GB, it seems to help some.

[James Heinrich]

Originally Posted by tuckerkao

I'm not that good checking the BIOS data, maybe you can tell me what to look up.

You may already have Asus' Armory Crate installed which includes monitoring stuff. Something like CoreTemp is much lighter to just show temperature and core usage.

Originally Posted by tuckerkao

After increase the emergency memory GB/Worker to 7 GB, it seems to help some.

What is your normal (not emergency) memory configuration set to? Perhaps show a screenshot of your Resource Limits dialog.

[tuckerkao]

Originally Posted by James Heinrich

What is your normal (not emergency) memory configuration set to? Perhaps show a screenshot of your Resource Limits dialog.

Temp Disk Space Limit (GB / Worker): 48
ECM Stage 2 Memory (GB) for both daytime and nighttime: 24

After installed Core Temp 1.18, it showed 86~87°C for CPU #0 and Power Usage of around 153 W.

[James Heinrich]

Originally Posted by tuckerkao

86~87°C for CPU #0 and Power Usage of around 153 W.

Your CPU would seem to be throttling itself to fit within the thermal limits. For comparison mine is running PRP on 16 cores at 5425MHz at 68°C @ 176W.

[LaurV]

Originally Posted by James Heinrich

Yes, doing things worse is usually faster.

+1
I may steal that and use it like a motto for a while...

[tuckerkao]

Originally Posted by James Heinrich

Your CPU would seem to be throttling itself to fit within the thermal limits. For comparison mine is running PRP on 16 cores at 5425MHz at 68°C @ 176W.

I believe I have found the guideline online of how to adjust the thermal limits from the BIOS, but will let you check it first - https://edgeup.asus.com/2022/control...o-enhancement/

My motherboard is: Asus Prime X670-P Wifi AM5 ATX w/ Wi-Fi 6, 2.5GbT Lan, (3)PCIe x16, (1)PCIe x1, (3)M.2, (6)Sata for the Ryzen 7950X CPU

After raising the emergency memory to 7.8 GBs / Worker, the P-1 cycle could go for at least 3 hours, then the memory ran out again. Thus I had to restart Windows 10 after every P-1 completed. I'm wondering why Prime95 wouldn't release the used memory space like my the other computer.

I have 2 T-Delta 6000 MHz DDR5 RAM, 16 GBs each and 32 GB total.

[James Heinrich]

Originally Posted by tuckerkao

After raising the emergency memory to 7.8 GB / Worker, the P-1 cycle could go for at least 3 hours, then the memory ran out again. Thus I have to restart Windows 10 after every P-1 completed. I'm wondering why Prime95 won't release the used memory space like my the other computer.

You're doing something wrong. Prime95 should never need "emergency" memory to run things. That's why it's called "emergency". Set it back to 1GB.
If you want help, show screenshots of your Resource Limits dialog, and the worker window as it starts up P-1 and gets to however far it gets, and what the crash looks like when it "runs out of memory".

[tuckerkao]

Originally Posted by tuckerkao

This error doesn't occur every time, but most likely will occur after half an hour of continuous test.

The crash screen screenshot was already posted on post #6 of this thread which was on page 1 and quoted above.

Once "in write_gwnum, unexpected gwtogiant failure retcode -1" error message shows up, the P-1 progress can no longer be saved and will likely hit "Out of Memory" within several minutes.

The 2 new screenshots show the resource limit windows. I'm trying to see whether use hyperthreads for P-1 will help.

[James Heinrich]

Originally Posted by tuckerkao

The crash screen screenshot was already posted on post #6 of this thread

The screenshots on post #6 don't say anything about being out of memory.

[tuckerkao]

Originally Posted by James Heinrich

The screenshots on post #6 don't say anything about being out of memory.

The "Out of Memory" message was shown after Prime95 finished the stage 1 of P-1, then it showed "Out of Memory!" on the bottom window, then the worker stopped with no stage 2, but it could take me another several hours to try to regenerate that very specific screen.

It had to be after "in write_gwnum, unexpected gwtogiant failure retcode -1" showed on the top.

Originally Posted by James Heinrich

Also, you seem to be running only 1 worker with 8 threads so only using half the CPU?

When using all 16 Cores at the same, the rounding errors show up very often.