Re: [OMPI users] Summary of OMPI on OS X with Intel

On 7/18/06 7:33 PM, "Warner Yuen" wrote: > USING GCC 4.0.1 (build 5341) with and without Intel Fortran (build > 9.1.027): What version of Open MPI were you working with? If it was a developer/SVN checkout, what version of the GNU Auto tools were you using? > Config #2:

[OMPI users] OPEN_MPI with Intel Compiler -regards

Dear All, I was able to compile OpenMPI and create wrapper functions(like mpicc,mpif77,etc) on top of GNU compilers.But when i tried it with Intel fortran compiler(Since i need f90 compiler also),i met with some configuration error(Hence i did'nt ger the Makefile).I am here with attching

[OMPI users] OpenMPI v/s( MPICH,LAM/MPI)

Dear All, I have been using openMPI for the last one month,so i need some clarification regrding the following points. 1). What is the advantage of OpenMPI over MPICH2 and LAM/MPI.I mean to say is there any difference in performace wise. 2). Any check pointing mechanism is there in OpenMPI

Re: [OMPI users] SEGV in libopal during MPI_Alltoall

Hi, shen T.T. wrote: > Do you have the other compiler? Could you check the error and report it ? I don't used other Intel Compilers at the moment, but I'm going to give gfortran a try today. Kind regards, -- Frank Gruellich HPC-Techniker Tel.: +49 3722 528 42 Fax:+49 3722 528 15

Re: [OMPI users] SEGV in libopal during MPI_Alltoall

Hi, George Bosilca wrote: > On the all-to-all collective the send and receive buffers has to be able > to contain all the information you try to send. On this particular case, > as you initialize the envio variable to a double I suppose it is defined > as a double. If it's the case then the error

Re: [OMPI users] SEGV in libopal during MPI_Alltoall

It is what I suspected. You can see that the envio array is smaller than it should. It was created as an array of doubles with the size t_max, when it should have been created as an array of double with the size t_max * nprocs. If you look how the recibe array is created you can notice that

Re: [OMPI users] Summary of OMPI on OS X with Intel

On 7/20/06 12:04 AM, "Jeff Squyres" wrote: >> Config #2: ./configure --disable-shared --enable-static --with-rsh=/ >> usr/bin/ssh >> Successful Build = NO >> Error: >> g++ -O3 -DNDEBUG -finline-functions -Wl,-u -Wl,_munmap -Wl,- >> multiply_defined -Wl,suppress -o ompi_info

Re: [OMPI users] OPEN_MPI with Intel Compiler -regards

Could you re-send that? The attachment that I got was an excel spreadsheet with the output from configure that did not show any errors -- it just stopped in the middle of the check for "bool" in the C++ compiler. Two notes: 1. One common mistake that people make is to use the "icc" compiler for

[OMPI users] MPI applicability

Hi, Is MPI paradigm applicable to the cluster of regular networked machines. That is, does the cost of network IO offset benefits of parallelization? My guess is that this really depends on the application itself, however, I'm wondering if you guys know of any success stories which involve MPI

Re: [OMPI users] MPI applicability

Its doable, the scaling will not as good, because a network is a network. If you are using just regular 100Mbit, you will not scale as far as really good 1gig ethernet, but we are still talking about tcp which incurs a penalty over networks like infiniband and myrinet. Tcp is the largest

Re: [OMPI users] MPI applicability

I think there are two questions here: 1. Running MPI applications on "slow" networks (e.g., 100mbps). This is very much application-dependent. If your MPI app doesn't communication with other processes much, then it probably won't matter. If you have latency/bandwidth-sensitive applications,

Re: [OMPI users] SEGV in libopal during MPI_Alltoall

Hi George, George Bosilca wrote: > It is what I suspected. You can see that the envio array is smaller than > it should. It was created as an array of doubles with the size t_max, when > it should have been created as an array of double with the size t_max * > nprocs. Ah, yes, I see (and even

Re: [OMPI users] MPI_Finalize runtime error

What version of Open MPI are you using? Can you run your application through a memory-checking debugger such as Valgrind to see if it gives any more information about where the original problem occurs? On 7/17/06 10:14 PM, "Manal Helal" wrote: > Hi > > after I finish

Re: [OMPI users] BTL devices

On 7/14/06 10:40 AM, "Michael Kluskens" wrote: > I've looked through the documentation but I haven't found the > discussion about what each BTL device is, for example, I have: > > MCA btl: self (MCA v1.0, API v1.0, Component v1.2) This is the "loopback" Open MPI device. It

Re: [OMPI users] What Really Happens During OpenMPI MPI_INIT?

On 7/17/06 12:37 AM, "Mahesh Barve" wrote: > Can anyone please enlighten us about what really > happens in MPI_init() in openMPI? This is quite a complicated question. :-) > More specifically i am interested in knowing > 1.Functions that needs to accomplished during

Re: [MTT users] nightly results format

This looks great! The only addition that I would ask for is some kind of executive summary at the top so that developers can look at one small portion of data and see if they need to look any further. One of the Big Goals of MTT was to avoid overloading the developers w/ information by only

Re: [MTT users] nightly results format

well, what might suffice is having one rather short email - like executive summary you listed as #1. and then as well, include links that would perform 3-4 standard queries which could include query1:list all failures query2:list all tests with short descriptions query3: something 3 query4: