Wouldn't there be performance tradeoffs there? I'd think that at least supporting 4.1, in my case, would result in faster execution.
____ *Note: UMDNJ is now Rutgers-Biomedical and Health Sciences*
|| \\UTGERS |---------------------*O*---------------------
||_// Biomedical | Ryan Novosielski - Senior Technologist
|| \\ and Health |
novosirj.rutgers.edu<mailto:
novosirj.rutgers.edu>- 973/972.0922 (2x0922)
|| \\ Sciences | OIRT/High Perf & Res Comp - MSB C630, Newark
`'
On Jan 12, 2015, at 20:45, Daniel Roe <daniel.r.roe.gmail.com<mailto:daniel.r.roe.gmail.com>> wrote:
Hi,
Personally, on clusters like that I usually just configure with the
'-nosse' flag to avoid the issue altogether.
-Dan
On Monday, January 12, 2015, Novosielski, Ryan <
novosirj.ca.rutgers.edu<mailto:
novosirj.ca.rutgers.edu>>
wrote:
Hi all,
I recently ran into the following error at runtime:
"Please verify that both the operating system and the processor support
Intel(R) SSE4_2 and POPCNT instructions."
The reason for this is that we have some nodes with Nehalem chipsets and
some with Harpertown chipsets on our cluster, and the master node is a
newer machine that supports some of the newer instructions. Looking through
the —full-help configure option, I saw that I could define SSE_TYPES to say
which CPU instructions should be supportable at runtime. However, I tried
building with SSE types set to SSE4.2,SSE4.1 and the reverse even though I
doubted that would make any difference. It appears as if it does add
-axSSE4.2,SSE4.1 to the appropriate places during the build, which from my
read of the Intel documentation is exactly what it should do. However, when
built, the code behaves the same way with the same error messages on the
Harpertown nodes. I don’t see a way to disable POPCNT, but it appears as if
SSE4.1 machines don’t support it, so I would assume it is not used when the
runtime dispatcher selects SSE4.1.
I was not aware of auto CPU dispatch before today, so I’m not sure if I’m
doing something wrong somehow. Amber version is 14, Intel compilers are
15.0.1.
____ *Note: UMDNJ is now Rutgers-Biomedical and Health Sciences*
|| \\UTGERS |---------------------*O*---------------------
||_// Biomedical | Ryan Novosielski - Senior Technologist
|| \\ and Health |
novosirj.rutgers.edu<mailto:
novosirj.rutgers.edu> <javascript:;> - 973/972.0922
(2x0922)
|| \\ Sciences | OIRT/High Perf & Res Comp - MSB C630, Newark
`'
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--
-------------------------
Daniel R. Roe, PhD
Department of Medicinal Chemistry
University of Utah
30 South 2000 East, Room 307
Salt Lake City, UT 84112-5820
http://home.chpc.utah.edu/~cheatham/
(801) 587-9652
(801) 585-6208 (Fax)
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Received on Tue Jan 13 2015 - 09:30:02 PST
