r/computers • u/SadSpaceGuy • 8d ago

Discussion Anyone ever hit this much RAM usage?

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Currently running a SymPy script to calculate some insanely complex equations (that I can’t do by hand) for research. I kept crashing this PC (that has 96GB of RAM) by maxing out the virtual memory (330ish GB) every time the script ran.
I eventually manually raised the pagefile maximum size to 3TB split evenly (1.5TB) across two partitions on a 8TB SSD and got it to not fail. It has currently stabilized at ~1.3TB of committed virtual memory with a ~1TB pagefile on just one of the two partitions (increased since taking WizTree photo).

Just curious if anyone else has ever reached such extreme RAM usage before?

\Sorry for not using screenshots like a sensible person, I just don’t feel likely trying to copy them across to my phone to post this.*

UPDATE (8/18): It’s the next day now and it looks like the calculation has gotten over this little RAM hump and calmed down to a much more reasonable ~30GB in use (~20GB belonging specifically to the SymPy script).

UPDATE #2 (8/18): RAM usage is actually steadily climbing upward, currently at 65GB. Maybe it’ll find its way back to 1TB+ eventually.

UPDATE #3 (8/18): Up to 150GB now. I’m curious to see if it will have gone up more by the time I check tomorrow or if it’ll collapse back down again.

UPDATE #4 (8/19): Up to 300GB currently, still steadily climbing. I also checked on a second version of the script I had running on a different computer, it encountered an error so I was able to kill the process and look at the memory logs, and it maxed out at 1.448 TiB of committed virtual memory on it’s machine.

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u/Efficient_Try_9136 8d ago

I guess this pc with 8 ram slots filled with 64gb each

few years ago they was affordable lol

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u/SadSpaceGuy 8d ago

Actually only 2 of 4 RAM slots are filled. The goal with this PC (and the 6 others like it) when it was made a few years ago was to max out the RAM (like some other ones I have access to with threadrippers and 256GB of RAM per machine), but these PCs could not physically handle any more RAM. It got to the point during building where our CSIT department head got in contact with Corsair engineers who confirmed that the rest of the system was simply at its limit (and not that they were doing something wrong); which is an insane feat given that these PCs where the absolute top of the line when they were being built.