Tag Archives: Parallel

OpenMP, OpenMPI, MPICH decisions decisions

A short look at OpenMP multithread code, a new kind of bug that comes with multithread conversions, and OpenMP vs OpenMPI Continue reading

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Posted in GCM, Tech Bits | Tagged , , , , | 50 Comments

A FAMOUS/HadCM3 Parallel Computing Paper That Has Saved Me Years

About efficiency and Climate Models; making code parallel, and a few side remarks about run-time sensitivity to things like particular hardware and compiler settings. Continue reading

Posted in GCM, Tech Bits | Tagged , , , , , | 26 Comments

Parallel, Scripts, Clusters, & Easy Use

A fascinating little tool from the GNU folks that lets you split shell scripts or regular *Nix command execution over several cores or several computer. Parallel. It’s a gem. Continue reading

Posted in Tech Bits | Tagged , , , | 11 Comments

An Amusing Parallel Pi FORTRAN Experiment

A very unexpected outcome from making a parallel FORTRAN program run in all 4 cores or even 2 of the Raspberry Pi Model 2. Continue reading

Posted in Tech Bits | Tagged , , , | 15 Comments