About memory allocation for Abaqus
About memory allocation for Abaqus
(OP)
Hi all. I want to upgrade my workstation, but I need some information about how different OSs allocate memory, just to avoid useless money efforts... Are the following considetaions correct?
1) Windows 32bit + just one 32or64 bit processor => max memory available for a single process = 2 GBytes.
2) Windows 32bit + N multiple 32or64 bit processors => max memory available for a single process = N*2 GBytes.
4) Windows 64bit + N multiple 64 bit processors => max memory available for a single process = N*4 GBytes.
5) Linux 32or64 bit + any 32or64 bit processors => same considerations written for Windows 32or64 bit.
Is it correct? Thanx for any suggestion!
1) Windows 32bit + just one 32or64 bit processor => max memory available for a single process = 2 GBytes.
2) Windows 32bit + N multiple 32or64 bit processors => max memory available for a single process = N*2 GBytes.
4) Windows 64bit + N multiple 64 bit processors => max memory available for a single process = N*4 GBytes.
5) Linux 32or64 bit + any 32or64 bit processors => same considerations written for Windows 32or64 bit.
Is it correct? Thanx for any suggestion!





RE: About memory allocation for Abaqus
32 bit windows will only allow 2^32 different memory addresses(about 4Gb)
64 bit windows will allow 2^64 different memory addresses (about 1.8E19 bytes or 18exabyte?)
xp requires 2Gb for operating system for both I believe.
You'll be limited by the amount of memory available physically. I don't think there are computers w/ much more than say 8-10 Gb of ram available right now.
Am I wrong anyone?
RE: About memory allocation for Abaqus
What is the max. memory that I can set up in abaqus job?
RE: About memory allocation for Abaqus
I'm running large jobs with over 100k elements so I try to get the most memory out of my 64-bit machine (I also have 8 Gb).
I would start w/ say 7 Gb and maximum then slowly back off the memory until it works. Abaqus will abort fairly quick if it cannot allocate the memory requested.
RE: About memory allocation for Abaqus
Analysis input file processor memory: 1500 MB
ABAQUS/Standard memory cap: 3000 MB
ABAQUS/Standard memory policy: Moderate
But it takes me 48 hrs to complete the analysis:
148106 elements with 836,406 d.o.f.
So, you think I can increase ABAQUS/Standard memory cap to 6000 MB. Let me try.
RE: About memory allocation for Abaqus