qsub memory allocation

[Jazzy]

Hey,

I intend to write a shell which automatically submit jobs with qsub. One idea is that it'll be better if the shell assigns how much memory each job needs to each qsub command. However, I am not quite sure how much each job needs. Is there anyone out there who knows how to approximate the memory needed?

[rhinoceros]

Is there anyone out there who knows how to approximate the memory needed?

X times Y times Z

Where X is the estimated single-thread memory usage of your task, Y is the number or threads, and Z is how memory usage scales with threads.

For example:

Task takes 4GB
Two threads
No thread-effect

4GB x 2 x 0.5 (two threads share the RAM) = 4GB

Task takes 4GB
Two threads
Each thread takes full RAM

4GB X 2 x 1 = 8GB


A clear answer to a clear question.

[Jazzy]

X times Y times Z

Where X is the estimated single-thread memory usage of your task, Y is the number or threads, and Z is how memory usage scales with threads.

For example:

Task takes 4GB
Two threads
No thread-effect

4GB x 2 x 0.5 (two threads share the RAM) = 4GB

Task takes 4GB
Two threads
Each thread takes full RAM

4GB X 2 x 1 = 8GB


A clear answer to a clear question.

hey,rhinoceros, thanks for your answer! and yes I believe you've given a very clear one.