mpi

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Getting Pycuda to work with Mpi4py on 2 gpus [closed]

Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to in开发者_如何学运维clude desired behavior, a specific problem or error, and the sho[详细]

2023-03-20 20:39 分类：问答
MPI (Asynchronous) Loop Iteration

I have a program similar to the one开发者_开发百科 below. In the code below, all processes know the current iteration step of all other processes. However, I am curious if there is a way to do this wi[详细]

2023-03-20 14:31 分类：问答
OpenMPI 1.4.3 vs. Intel MPI Efficiency question

I noticed that the exact same code took 50% more time to run on OpenMPI than Intel. I use the following syntax to compile and run:[详细]

2023-03-20 08:01 分类：问答
MPI with thread support and Bcast calls

I was wondering if in an MPI program where you specify that there is thread support, all the开发者_运维技巧 threads make an MPI::Bcast call (making shure that in the call, the sender process only poss[详细]

2023-03-20 06:59 分类：问答
Implied synchronization with MPI_BCAST for both sender and receivers?

When calling MPI_BCAST, is there any implied synchronization? For example, if the sender process were to get to the MPI_BCAST before others could it do the BCAST and then continue without any acknowle[详细]

2023-03-19 23:47 分类：问答
OpenMPI 1.4.3 mpirun hostfile error

I am trying to run a simple MPI program on 4 nodes. I am using OpenMPI 1.4.3 running on Centos 5.5. When I submit the MPIRUN Command with the hostfile/machinefile, I get no output, receive a 开发者_JS[详细]

2023-03-19 04:57 分类：问答
MPI Asynchronous/One-Sided Communication

I have a situation similar to the code below: worker processes work on a subset of data and must send an unknown amount of data back to the master. Is it possible to have the master wait and receive a[详细]

2023-03-18 12:23 分类：问答
MPI. Running mpi in function

I want to run some function using mpi from main but I don\'t know how it should be. It looks like: #define MAXSIZE 100[详细]

2023-03-18 06:20 分类：问答
How to MPI_Gatherv with displacements on the sending side?

I\'m trying to recombine sub-arrays without the dark-grey rows with MPI_Gatherv. Picture\'s worth a thousand words:[详细]

2023-03-17 20:29 分类：问答
Serialize mpi threads

Is there anyway to serialize a certain part of your MPI code ? For example when printing the information out to the screen. Something like below:[详细]

2023-03-17 13:28 分类：问答