Re: [OMPI users] Strange TCP latency results on Amazon EC2

2012-01-13 Thread Rayson Ho
On Tue, Jan 10, 2012 at 10:02 AM, Roberto Rey wrote: > I'm running some tests on EC2 cluster instances with 10 Gigabit Ethernet > hardware and I'm getting strange latency results with Netpipe and OpenMPI. - There are 3 types of instances that can use 10 GbE. Are you using

Re: [hwloc-users] Compiling hwloc into a static library on Windows and Linux

2012-01-13 Thread Samuel Thibault
Andrew Helwer, le Fri 13 Jan 2012 18:16:16 +0100, a écrit : > libhwloc.lib(traversal.o) : error LNK2019: unresolved external symbol > __ms_vsnpr > intf referenced in function snprintf Do you also link msvcrt in? mingw needs it for almost everything. Samuel

Re: [OMPI users] Strange TCP latency results on Amazon EC2

2012-01-13 Thread Bogdan Costescu
On Thu, Jan 12, 2012 at 16:10, Jeff Squyres wrote: > It's very strange to me that Open MPI is getting *better* than raw TCP > performance.  I don't have an immediate explanation for that -- if you're > using the TCP BTL, then OMPI should be using TCP sockets, just like

Re: [OMPI users] ompi + bash + GE + modules

2012-01-13 Thread Prentice Bisbal
On 01/12/2012 08:40 AM, Dave Love wrote: > Surely this should be on the gridengine list -- and it's in recent > archives -- but there's some ob-openmpi below. Can Notre Dame not get > the support they've paid Univa for? This is, in fact, in the recent gridengine archives. I brought up this

Re: [OMPI users] Openmpi SGE and BLACS

2012-01-13 Thread TERRY DONTJE
Do you have a stack of where exactly things are seg faulting in blacs_pinfo? --td On 1/13/2012 8:12 AM, Conn ORourke wrote: Dear Openmpi Users, I am reserving several processors with SGE upon which I want to run a number of openmpi jobs, all of which individually (and combined) use less

[OMPI users] Openmpi SGE and BLACS

2012-01-13 Thread Conn ORourke
Dear Openmpi Users, I am reserving several processors with SGE upon which I want to run a number of openmpi jobs, all of which individually (and combined) use less than the reserved number of processors. The code I am using uses BLACS, and when blacs_pinfo is called I get a seg fault. If the

[OMPI users] MPI_AllGather null terminator character

2012-01-13 Thread Gabriele Fatigati
Dear OpenMPI, using MPI_Allgather with MPI_CHAR type, I have a doubt about null-terminated character. Imaging I want to spawn node names where my program is running on: char hostname[MAX_LEN]; char*