[mpich-discuss] MPICH2 1.0.6p1 & Windows HPC Server 2008 (badperformance

[Seifer Lin]

Hi Everyone:

Finally the problem is resolved by adding a registry value
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{NIC-id}\TcpAckFrequency

Set TcpAckFrequency to 1 resolves the problem.

regards,
Seifer Lin

2008/12/10 Hisham Adel <hosham2004 at yahoo.com>

>
> Why are you use MPICH2 ?
>
> The Cluster component on Windows server 2008 (HPC component) have MSMPI it
> is like MPICH2 but it is modified by Microsoft.
> You can use it as MPICH2. There is no change in any thing the same
> functions and everything is the same.
>
> I have tried it on a cluster of 4 nodes and it works.
>
>
>
> Hisham Adel Hassan Mohamed
> Research Assistant
> Bioinformatics Group
> Nile University
> Smart Village - km28
> Cairo - Alexandria Desert Road
> Giza , EGYPT
> Mobile : +20106459663
> Email:Hisham.mohamed at nileu.edu.eg <Email%3AHisham.mohamed at nileu.edu.eg>
>
>
> --- On *Mon, 12/8/08, Jayesh Krishna <jayesh at mcs.anl.gov>* wrote:
>
> From: Jayesh Krishna <jayesh at mcs.anl.gov>
> Subject: Re: [mpich-discuss] MPICH2 1.0.6p1 & Windows HPC Server 2008
> (badperformance)
> To: "'Seifer Lin'" <seiferlin at gmail.com>
> Cc: mpich-discuss at mcs.anl.gov
> Date: Monday, December 8, 2008, 5:10 PM
>
>  Hi,
>  Can you try out the latest stable version (1.0.8) of MPICH2 (
> http://www.mcs.anl.gov/research/projects/mpich2/downloads/index.php?s=downloads
> )?
>
> Regards,
> Jayesh
>
>  ------------------------------
> *From:* mpich-discuss-bounces at mcs.anl.gov [mailto:
> mpich-discuss-bounces at mcs.anl.gov] *On Behalf Of *Seifer Lin
> *Sent:* Monday, December 08, 2008 12:47 AM
> *To:* mpich-discuss at mcs.anl.gov
> *Subject:* [mpich-discuss] MPICH2 1.0.6p1 & Windows HPC Server 2008
> (badperformance)
>
>  Hi everyone:
>
> I have a cluster of 4 nodes, all of them are with Windows HPC server 2008
> installed.
> I make all of the 4 nodes in the same workgroup. I use MPICH2 1.0.6p1 from
> Argonne Lab.
> And then
> 1. firewall of all 4 nodes are turned off
> 2. UAC (User Account Control) of all 4 nodes are turned off
> 3. I start smpd.exe (1.0.6p1 x64) in all the 4 nodes
>
> And I run a very simple MPI program (test_mpich2.exe)
>
> #include "mpi.h"
> #include <iostream>
> int main(int argc, char **argv)
> {
>     int cpuid, ncpu;
>     MPI_Init(&argc, &argv);
>     MPI_Comm_size(MPI_COMM_WORLD, &ncpu);
>     MPI_Comm_rank(MPI_COMM_WORLD, &cpuid);
>     printf("NCPU:%d, CPUID:%d\n", ncpu, cpuid);
>     fflush(stdout);
>     printf("start barrier\n"); fflush(stdout);
>     MPI_Barrier(MPI_COMM_WORLD);
>     printf("end barrier\n"); fflush(stdout);
>     MPI_Finalize();
>     return 0;
> }
>
> The command is
> mpiexec -hosts 2 192.168.1.1 192.168.1.2
> \\192.168.1.1\shared\test_mpich2.exe
>
> And the MPI_Barrier(...) function costs 10 seconds to return !!!!!
>
> If the same code is running on a Windows XP cluster, MPI_Barrier(...)
> returns at once!
>
>
> Does anyone know how to solve this problem on Windows HPC Server 2008 ?
> (Windows Vista has the same problem, too)
>
> regards,
>
> Seifer Lin
>
>
>
>
>
>
>
>
>
>
>
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