Prime95 version 25.7 - Page 6

ixfd64 · 2008-10-12, 01:47

OK, I may have found a bug with version 25.7.

I allocated 32 MB of memory for daytime and nighttime use, and Prime95 still complained about getting only 8 MB.

Edit: There seems to be another major problem. I added "UseV4=1" to the prime.txt file, but it gets removed every time I run Prime95.

It's a good thing I didn't replace version 24.14 with 25.7 yet.

sdbardwick · 2008-10-12, 04:55

Quote:

Originally Posted by ixfd64

OK, I may have found a bug with version 25.7.

I allocated 32 MB of memory for daytime and nighttime use, and Prime95 still complained about getting only 8 MB.

Edit: There seems to be another major problem. I added "UseV4=1" to the prime.txt file, but it gets removed every time I run Prime95.

It's a good thing I didn't replace version 24.14 with 25.7 yet.

If you are running Vista, install Prime95 somewhere other than Program Files. If not Vista, maybe it is a permissions problem; it looks like the revised files are not being written.

ixfd64 · 2008-10-12, 05:04

I'm running Vista on that computer, but I'm not using the Program Files folder.

For some reaosn, Prime95 still thinks I'm using v5.

Kevin · 2008-10-12, 05:31

Quote:

Originally Posted by ixfd64

I allocated 32 MB of memory for daytime and nighttime use, and Prime95 still complained about getting only 8 MB.

Already been noticed, will be fixed in next release (post #33).

S00113 · 2008-10-12, 10:49

Quote:

Originally Posted by Prime95

Has anyone tried 25.7 on a laptop? Does it stop properly when on battery? Does it resume properly? Is hibernation ever a problem?

I've tried on one laptop running Ubuntu 8.04 and on my Eee PC901, and mprime does not stop when on battery. Hibernation is not a problem.

If you want to handle ACPI in Linux, please have a look at thermal management as well. I'd like mprime to throttle down when the CPU temperature gets within one or two K from the critical point where the computer slows down or suspends to protect itself, or even an option to keep the CPU at a configurable temperature by dymaically changing the throttling value. This is useful to keep fan noise on workstations at an acceptable level.

James Heinrich · 2008-10-12, 12:00

Still having big problems with Prime95 having memory allocation errors and paring itself down to ~500MB for P-1 (even though 2GB+ is available).

Also, I think I mentioned it before, but it would be useful to have menu option (both main window menu and system tray icon menu) to temporarily restrict to low-memory mode. The LowMemWhileRunning setting is great, but every now and then I may run into a program or situation that wasn't pre-configured for low-mem, but I want to force low-mem mode.

Prime95 · 2008-10-12, 19:15

Quote:

Originally Posted by James Heinrich

Still having big problems with Prime95 having memory allocation errors and paring itself down to ~500MB for P-1

64-bit Windows, right? If so, try getting 25.7 build 4 (same URL) and see if the problem goes away.

Prime95 · 2008-10-12, 22:04

Quote:

Originally Posted by Prime95

64-bit Windows, right? If so, try getting 25.7 build 4 (same URL) and see if the problem goes away.

Never mind. What looked promising has started to fail. I really don't know what's going on. I call malloc and get a NULL back when I'm well below the system's physical memory according to task manager.

James Heinrich · 2008-10-12, 22:11

Quote:

Originally Posted by Prime95

64-bit Windows, right? If so, try getting 25.7 build 4 (same URL) and see if the problem goes away.

Problem doesn't go away

See attachment. Set Prime95 to allow up to 2400MB. Used memory before starting was 1.22GB, the peak cutoff point was 3.05GB for both failed attempts. After this I reset the settings to use 1800MB, Prime95 elected to use 1765MB which put the system memory usage (according to Task Manager) at 3.09GB and it's running just fine.

edit:

Quote:

Originally Posted by Prime95

Never mind. What looked promising has started to fail. I really don't know what's going on. I call malloc and get a NULL back when I'm well below the system's physical memory according to task manager.

Aha! So I'm not crazy!

Doesn't help you, but I feel less dumb now

retina · 2008-10-12, 23:03

Quote:

Originally Posted by Prime95

Never mind. What looked promising has started to fail. I really don't know what's going on. I call malloc and get a NULL back when I'm well below the system's physical memory according to task manager.

Could it be a fragmentation problem? I'm just saying because I have experienced this in the past. The OS was unable to find any contiguous memory segment large enough to satisfy my request. The only solutions I found were to either deallocate the offending bits of memory strewn about the address space or to quit and restart the process.

James Heinrich · 2008-10-13, 01:14

Small observation: Prime95 notes:

Quote:

[Main thread Oct 12 19:41] Entering a period of low memory usage because WHATEVER.EXE is running.

but it never mentions at what point the period of low memory usage stops; it might be useful to say:

Quote:

[Main thread Oct 12 19:42] Ending period of low memory usage

once all the possible LowMemWhileRunning conditions are lifted.

2008-10-12, 01:47	#56
ixfd64 Bemusing Prompter "Danny" Dec 2002 California 2,467 Posts	OK, I may have found a bug with version 25.7. I allocated 32 MB of memory for daytime and nighttime use, and Prime95 still complained about getting only 8 MB. Edit: There seems to be another major problem. I added "UseV4=1" to the prime.txt file, but it gets removed every time I run Prime95. It's a good thing I didn't replace version 24.14 with 25.7 yet. Last fiddled with by ixfd64 on 2008-10-12 at 01:56

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2008-10-12, 05:04	#58
ixfd64 Bemusing Prompter "Danny" Dec 2002 California 2,467 Posts	I'm running Vista on that computer, but I'm not using the Program Files folder. For some reaosn, Prime95 still thinks I'm using v5.

2008-10-12, 12:00	#61
James Heinrich "James Heinrich" May 2004 ex-Northern Ontario 3,733 Posts	Still having big problems with Prime95 having memory allocation errors and paring itself down to ~500MB for P-1 (even though 2GB+ is available). Also, I think I mentioned it before, but it would be useful to have menu option (both main window menu and system tray icon menu) to temporarily restrict to low-memory mode. The LowMemWhileRunning setting is great, but every now and then I may run into a program or situation that wasn't pre-configured for low-mem, but I want to force low-mem mode.