topic Until recently, the in Software Archive

mpss 3.4 linux version support

TimP — Fri, 24 Oct 2014 16:19:38 GMT

https://software.intel.com/en-us/articles/intel-manycore-platform-software-stack-mpss-archive

states that Red Hat 6.2 is supported, but the readme.txt supplied as a URL there and included in the tar file says Red Hat 6.3 is required.

Does this mean I have reached the end of the line for mpss updates on my Westmere/KNC-B0 platform? I have no access to newer Red Hat; I recognize that people have run recent CentOS with mpss.

The only complaints I have with mpss 3.3 are that it is necessary to run network restart after starting mpss, and it's no longer possible to set a persistent password-less ssh. It's not particularly interesting to take advantage of ssh on the B0 anyway. I don't remember which mpss version introduced those deficiencies, which I suppose may be symptoms of lack of support for the old hardware.

ifort 15.0 cured some problems with MIC offload which I had been told might be due to non-support of the B0.

the version of mpss is tied

JJK — Mon, 27 Oct 2014 10:14:45 GMT

the version of mpss is tied mostly to the Linux kernel version, not the rest of the OS stack; which kernel version are you using on RHEL 6.2 ?

apart from that, what do you mean exactly with " it's no longer possible to set a persistent password-less ssh. " ? I run mpss 3.3 on Scientific Linux 6.5 and use ssh authorized_keys logons without any issues. Or do you want completely password-less ssh?

Until recently, the

TimP — Mon, 27 Oct 2014 10:30:24 GMT

Until recently, the assumption was that the supported mpss required the original kernel distributed with the supported OS. Are you hinting that mpss 3.4 would require a kernel upgrade in red hat 6.2? I would have thought that the installation instructions would specify, if 6.2 were still suitable, whether it needs a kernel upgrade (how to do that?) or an mpss rebuild.

With earlier versions of mpss, it was sufficient to run the script included with Intel MPI to set up authorized keys once after installing mpss; then the password-less ssh would persist even after reboot. As I had to fall back on the older hardware with less RAM, I can't run full size MPI jobs, so haven't needed to find out how the setup procedure may have changed.

Hi Tim,

Loc_N_Intel — Tue, 28 Oct 2014 22:54:34 GMT

Hi Tim,

I just get the confirmation that MPSS 3.4 doesn't officially support RHEL 6.2 . Thank you for pointing it out. I just corrected the typo on the MPSS page.

For your information, I run MPSS 3.3/RHEL 6.3 on one system here equipped with B0 cards. I never have problem with password-less ssh.