- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hi Guys,
I just installed Linux and Intel MPI to two machines:
(1) Quite old (~8 years old) SuperMicro server, which has 24 cores (Intel Xeon X7542 X 4). 32 GB memory. OS: CentOS 7.5
(2) New HP ProLiant DL380 server, which has 32 cores (Intel Xeon Gold 6130 X 2). 64 GB memory. OS: OpenSUSE Leap 15
After installing OS and Intel MPI, I compiled intel MPI benchmark and ran it:
$ mpirun -np 4 ./IMB-EXT
It is quite surprising to me that I find the same error when running IMB-EXT and IMB-RMA, though I have a different OS and everything (even GCC version used to compile Intel MPI benchmark is different -- in CentOS, I used GCC 6.5.0, and in OpenSUSE, I used GCC 7.3.1).
On the CentOS machine, I get:
#--------------------------------------------------- # Benchmarking Unidir_Put # #processes = 2 # ( 2 additional processes waiting in MPI_Barrier) #--------------------------------------------------- # # MODE: AGGREGATE # #bytes #repetitions t[usec] Mbytes/sec 0 1000 0.05 0.00 4 1000 30.56 0.13 8 1000 31.53 0.25 16 1000 30.99 0.52 32 1000 30.93 1.03 64 1000 30.30 2.11 128 1000 30.31 4.22
and on the OpenSUSE machine, I get
#--------------------------------------------------- # Benchmarking Unidir_Put # #processes = 2 # ( 2 additional processes waiting in MPI_Barrier) #--------------------------------------------------- # # MODE: AGGREGATE # #bytes #repetitions t[usec] Mbytes/sec 0 1000 0.04 0.00 4 1000 14.40 0.28 8 1000 14.04 0.57 16 1000 14.10 1.13 32 1000 13.96 2.29 64 1000 13.98 4.58 128 1000 14.08 9.09
When I don't use mpirun (which means there is only one process to run IMB-EXT), the benchmark runs through, but Unidir_Put needs >=2 processes, so doesn't help so much, and I also find that the functions with MPI_Put and MPI_Get is extremely slower than I expected (from my experience). Also, using MVAPICH on the OpenSUSE machine did not help.
Is there any chance that I am missing something in installing MPI, or configuring and installing OS in these machines?
Thanks a lot in advance,
Jae
Link Copied
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page