[Mckernel-users 33] Re: [Problem with installation of mckernel again]

[안민우]

Hello Balazs,

I solved all problems I send before.

I compared elapsed time of each workloads in NPB-MPI, results was quite
strange.

My Intel Xeon server have 2 NUMAs and 6 cores each. I assigned 6 cores from
NUMA1 and 2 cores from NUMA0(total 8 cores) to McKernel and run NPB.
Compared to this, I used same cores(8 cores) to run NPB in CentOS.

According to my result, elapsed time of NPB on McKernel vs. Linux was
similar, but every workloads show that elapsed time of NPB on Linux is
little bit shorter. Is it right result?


Moreover, I have some runtime error to run "Linpack" benchmark. Linpack
stops it's running during runtime.

I use mpiexec command as $mcexec mpiexec -np 8 <executable>.

Is there any problem? And there is way to see kmsg on McKernel before my
server reboots itself?


Thank you to read my email.

Best regards,

Minwoo Ahn.

2017-05-17 11:18 GMT+09:00 안민우 <mwahn402 at gmail.com>:

> Hello Balazs,
>
> I'm MS student from Korea, who sent emails about installation of
> mckernel(I successfully installed before). I have 3 questions.
>
> 1.
>
> I have some problem in my linux, so I install centOS again and I tried to
> build and boot mckernel.
>
> I successed to build mckernel(ihk+mckernel.tgz as you gave to me), but
> when I tried to run mcreboot.sh script in "install/sbin" directory, my
> whole server rebooted itself.
>
> I'm sure that I disabled irqbalance and changed to SELINUX=disabled.
>
> How can I fix my problem?
>
> 2.
>
> Moreover, how can I find some documents(or manual) about mckernel source
> code?
>
> It is for change # of cores of mckernel. In my server, without any
> modification of configuration, mckernel installed on 6 cores. Can I change
> it to 8 cores?
>
> 3.
>
> I tried to run NAS parallel benchmark in MPI version(ft.B.16), it causes
> page fault(What's the problem?). Is it write to run "ft.B.16" executable
> file with command "MPI_NUM_THREAD=16 mcexec {PATH_TO_EXECUTABLE}/ft.B.16" ?
>
>
>
> Thank you to read my email.
>
> Best regards,
>
> Minwoo Ahn.
>
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