Hi, could you also attach your current code ?
From: email@example.com [mailto:firstname.lastname@example.org] On Behalf Of seshendra seshu
Sent: den 3 maj 2012 13:49
To: Open MPI Users
Subject: [OMPI users] Regarding the execution time calculation
I have written an parallel program and when i run my program on 4,8,16 nodes and calculated the execution time at master using MPI_Wtime in master node. The problem the execution time is increasing rapidly like NON parallel program-55 sec, and for parallel program 2-nodes--60sec , 4-nodes 74sec, 8-node--120 sec and for 16 nodes---for 180 sec. can i know my problem in parallel version actually the time needs to be decreased but it is increasing i dont the reason. i have calculated my time as shown below
// done some work
// start send from master node and receiving it
//in slave nodes done some work
Please help me in solving this problem.