I have a couple of doubts regarding the application of Amdahl's law with respect to GPUs. For instance, I have a kernel code that I have launched with a number of threads, say N. So,in the amdahl's...

Let us define : from multiprocessing import Pool import numpy as np def func(x): for i in range(1000): i**2 return 1 Notice that func() does something and it always returns a small number 1. ...

I'm trying to see if I can use Chapel for writing parallel code for use in a Python-based climate model: https://github.com/CliMT/climt I don't have any experience with Chapel, but it seems very p...

I want to use more processors to run my code to minimize the running time only. Though I have tried to do it but failed to get the desired result. My code is a very big one that's why I'm giving he...

I'm wondering, which is better to use with GridSearchCV( ..., n_jobs = ... ) to pick the best parameter set for a model, n_jobs = -1 or n_jobs with a big number, like n_jobs = 30 ? Based on Sklear...

I have created a GPU based indicator for MetaTrader Terminal platform, using OpenCL and MQL5. I have tried hard that my [ MetaTrader Terminal: Strategy Tester ] optimization job must get transferr...

I am attempting to implement multiprocessing in Python (Windows Server 2012) and am having trouble achieving the degree of performance improvement that I expect. In particular, for a set of tasks w...

I am trying to run parallel processes under python (on ubuntu). I started using multiprocessing and it worked fine for simple examples. Then came the pickle error, and so I switched to pathos. I g...

I have an N core processor ( 4 in my case ). Why isn't N totally independent function calls on N threads roughly N times faster ( of course there is an overhead of creating threads, but read furthe...

I'm learning to use Python's Multiprocessing package for embarrassingly parallel problems, so I wrote serial and parallel versions for determining the number of primes less than or equal to a natur...

I am puzzling with Amdahl's Law to determine performance gains and the serial application part and fail to figure out this one. Known is the following: S(N) = Speedup factor for (N) CPU's N = Num...

Amdahl's Law states that the maximal speedup of a computation where the fraction S of the computation must be done sequentially going from a 1 processor system to an N processor system is at most ...