<div>Hello Minwoo,</div><div><br></div><div>There are a few issues with how you are trying to run MPI jobs, but before getting to those, could you send me your ssh public key?</div><div>I will give you access to our code repository so that you can access the latest McKernel version.</div><div>Once you have that we can then move on to the MPI topic.</div><div><br></div><div>Best,</div><div>Balazs</div><div><br></div><div><br><div class="gmail_quote"><div>On Thu, May 25, 2017 at 21:18 안민우 <<a href="mailto:mwahn402@gmail.com">mwahn402@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>To be specific, Linpack benchmark problem shows<div><br></div><div>kernel:BUG: soft lockup - CPU#0 stuck for 23s! [mcexec:63572]</div><div>Terminate by signal 28</div></div><div class="gmail_extra"><br><div class="gmail_quote">2017-05-26 12:52 GMT+09:00 안민우 <span><<a href="mailto:mwahn402@gmail.com" target="_blank">mwahn402@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div>Hello Balazs,</div><div><br></div>I solved all problems I send before.<div><br></div><div>I compared elapsed time of each workloads in NPB-MPI, results was quite strange.</div><div><br></div><div>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.</div><div><br></div><div>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?</div><div><br></div><div><br></div><div>Moreover, I have some runtime error to run "Linpack" benchmark. Linpack stops it's running during runtime. </div><div><br></div><div>I use mpiexec command as $mcexec mpiexec -np 8 <executable>.</div><div><br></div><div>Is there any problem? And there is way to see kmsg on McKernel before my server reboots itself?</div><span><div><br></div><div><br></div><div>Thank you to read my email.</div><div><br></div><div>Best regards,</div><div><br></div><div>Minwoo Ahn. </div></span></div><div class="m_-1518886641074464636HOEnZb"><div class="m_-1518886641074464636h5"><div class="gmail_extra"><br><div class="gmail_quote">2017-05-17 11:18 GMT+09:00 안민우 <span><<a href="mailto:mwahn402@gmail.com" target="_blank">mwahn402@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>Hello Balazs,<div><br></div><div>I'm MS student from Korea, who sent emails about installation of mckernel(I successfully installed before). I have 3 questions.</div><div><br></div><div>1.</div><div><br></div><div>I have some problem in my linux, so I install centOS again and I tried to build and boot mckernel.</div><div><br></div><div>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.</div><div><br></div><div>I'm sure that I disabled irqbalance and changed to SELINUX=disabled. </div><div><br></div><div>How can I fix my problem?</div><div><br></div><div>2.</div><div><br></div><div>Moreover, how can I find some documents(or manual) about mckernel source code? </div><div><br></div><div>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? </div><div><br></div><div>3.</div><div><br></div><div>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" ?</div><div><br></div><div><br></div><div><br></div><div>Thank you to read my email.</div><div><br></div><div>Best regards,</div><div><br></div><div>Minwoo Ahn.</div></div>
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