Tag: python-multiprocessing

multiprocessing.Value doesn’t store float correctly

multiprocessing python python-multiprocessing

I try to asign a float to the multiprocessing.Value shared ctype as follows: However, the float stored in multiprocessing.Value is != the input float: Whats the problem here? EDIT: Found the solution (see answers) However, I do not understand, why a “double” is the correct type here and not a “float”. If someone can elaborate on that and include the

Multiprocessing: use only the physical cores?

linux parallel-processing python python-multiprocessing

I have a function foo which consumes a lot of memory and which I would like to run several instances of in parallel. Suppose I have a CPU with 4 physical cores, each with two logical cores. My system has enough memory to accommodate 4 instances of foo in parallel but not 8. Moreover, since 4 of these 8 cores