topic Re: Starting MPI programs over network in Intel® Moderncode for Parallel Architectures

Starting MPI programs over network

Jimmy821 — Mon, 19 Jan 2009 10:44:35 GMT

Hi,

Can anybody advise me how to start up MPI programs over each node in a network?

I tried to use the -host parameter, but all the programs didn't run, but terminate instantly.

Thanks,
Jimmy

Re: Starting MPI programs over network

srimks — Mon, 19 Jan 2009 17:45:18 GMT

Quoting - Jimmy82

Hi,

Can anybody advise me how to start up MPI programs over each node in a network?

I tried to use the -host parameter, but all the programs didn't run, but terminate instantly.

Thanks,
Jimmy

Hi.

The query which you asked could have many resposes and minimal responses too. I assume you must be a beginer, so my suggestions would be step wise -

(a) Identify which MPI libraries you would need, there are many flavors of MPI libs(OpenMPI, Intel-MPI, MVAPICH, MPICH, HP-MPI, PVM, etc.).Refer it's document, FAQ & links and start with their example programs.

(b) Learn how MPI communicates, learn about mpdboot too.

(c) Try with small node, could be 4, 8, 16, and so on.

(d) Have some Benchmark(e.g, IMB, SPEC-MPI2007, OSU, etc.) to analyze node communications with different message size and scaleability.

(e) Use Intel Trace Analyser & Collector, to know more about MPI's.

HIH.

~BR

Re: Starting MPI programs over network

Jimmy821 — Tue, 20 Jan 2009 01:47:44 GMT

Quoting - srimks

Quoting - Jimmy82

Hi,

Can anybody advise me how to start up MPI programs over each node in a network?

I tried to use the -host parameter, but all the programs didn't run, but terminate instantly.

Thanks,
Jimmy

Hi.

The query which you asked could have many resposes and minimal responses too. I assume you must be a beginer, so my suggestions would be step wise -

(a) Identify which MPI libraries you would need, there are many flavors of MPI libs(OpenMPI, Intel-MPI, MVAPICH, MPICH, HP-MPI, PVM, etc.).Refer it's document, FAQ & links and start with their example programs.

(b) Learn how MPI communicates, learn about mpdboot too.

(c) Try with small node, could be 4, 8, 16, and so on.

(d) Have some Benchmark(e.g, IMB, SPEC-MPI2007, OSU, etc.) to analyze node communications with different message size and scaleability.

(e) Use Intel Trace Analyser & Collector, to know more about MPI's.

HIH.

~BR

I am using Windows XP and is launching the application on another computer in the network through a configuration file.

An example command line would be
mpiexec -hosts 1 MYCOMNAME 1 test.exe

However, test.exe does not execute. Please advise. Thanks.

Re: Starting MPI programs over network

srimks — Tue, 20 Jan 2009 04:27:55 GMT

Quoting - Jimmy82

Hi.

I haven't tried on Win family of Operating-System as I work on Linux.

But while going through your query, seems that MPDBOOT is not activated on other nodes.

Could you enclose your reply with ERROR messages what you get.

~BR

Re: Starting MPI programs over network

Jimmy821 — Tue, 20 Jan 2009 14:14:22 GMT

Quoting - srimks

There's no error. The run completes immediately, which is wrong.

Re: Starting MPI programs over network

srimks — Tue, 20 Jan 2009 17:25:07 GMT

Quoting - Jimmy82

Quoting - srimks

Hi.

I haven't tried on Win family of Operating-System as I work on Linux.

But while going through your query, seems that MPDBOOT is not activated on other nodes.

Could you enclose your reply with ERROR messages what you get.

~BR

There's no error. The run completes immediately, which is wrong.

Try debugging the message for MPI_Send & MPI_Recv for small nodes, maybe you can analyze more.

But there should be some messages, maybe you might be missing.

~BR

Re: Starting MPI programs over network

Jimmy821 — Wed, 04 Feb 2009 17:36:23 GMT

Quoting - Jimmy82

Hi,

Can anybody advise me how to start up MPI programs over each node in a network?

I tried to use the -host parameter, but all the programs didn't run, but terminate instantly.

Thanks,
Jimmy

I tried to launch on the local computer and remote computer (connected by
-hosts 1 explore-m2 1 -env I_MPI_DEVICE sock -env I_MPI_PIN_PROCESSOR_LIST 0 -l BoostIntel.exe
-hosts 1 explore-h 1 -env I_MPI_DEVICE sock -env I_MPI_PIN_PROCESSOR_LIST 0 -l BoostIntel.exe

The configuration file attempts to start an instance of BoostIntel in both explore-m2 and explore-h. The launch process uses SMPD. However, the program refuse to start.

When I use ony local machines
-hosts 1 explore-m2 1 -env I_MPI_DEVICE sock -env I_MPI_PIN_PROCESSOR_LIST 0 -l BoostIntel.exe, the program works.

Can somebody advise? Thank.

Re: Starting MPI programs over network

Jimmy821 — Wed, 04 Feb 2009 17:42:11 GMT

Quoting - Jimmy82

Hi,

Can anybody advise me how to start up MPI programs over each node in a network?

I tried to use the -host parameter, but all the programs didn't run, but terminate instantly.

Thanks,
Jimmy

Re: Starting MPI programs over network

Jinwoo_reduck_Park — Thu, 12 Feb 2009 20:15:51 GMT

1. Check host. I think that you must make nodefile.
If machine names are n1 and n2,
write
------
n1
n2
------
in nodefile.

2. run mpdboot
mpdboot --totalnum=2 --file=nodefile

3. check (command : mpdtrace)
4. run mpiexec (mpiexec -np 2 executefile.exe)

I think this method will be able to apply to the windows.
Good luck