I am testing Python's multiprocessing module on a cluster with SLURM. I want to make absolutely sure that each of my tasks are actually running on separate cpu cores as I intend. Due to the many po...

Is there a way to determine the number of available CPU cores in JavaScript, so that you could adjust the number of web workers depending on that?

I have installed VirtualBox(Ubuntu 18.04.2 64-bit) and PySpark 2.4.0. When I created a VB I put 4 CPUs to be max. How am I supposed to check how many cores Spark is using?

I've been banging my head with this for the last 3-4 days and I can't find a DECENT explanatory documentation (from ARM or unofficial) to help me. I've got an ODROID-XU board (big.LITTLE 2 x Cortex...

You can see the output from lscpu command - jack@042:~$ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 56 On-line CPU(s) list: 0-55 Thread(s) per core:...

I'm very new at using distributed python library. I have 4 workers and i have successfully launched some parallel runs using 14 cores (among the 16 available) for each worker, resulting in 4*14=56 ...

I thought the point of a multi-core computer is that it could run multiple threads simultaneously. In that case, if you have a quad-core machine, what's the point of having more than 4 threads runn...

I want to implement a CoreLocal map, which works just like ThreadLocal, only it returns a value that is specific to the core the current thread is running on. The reason for this is that I want to...

I have a quad core CPU, and lets say I always want to start a Thread on the second core. Is that possible in C#?

Can somebody help me to understand how JVM spread threads between available CPU cores? Here som my vision how it is work but pls correct me. So from the begining: when computer is started then boo...

I have a simple mono-threaded application that does almost pure processing It uses two int buffers of the same size It reads one-by-one all the values of the first buffer each value is a...

I am currently volunteering to learn about linux servers and also I am interested in learning about cluster computing techniques. In this lab, they have a small cluster with one head node an...

In using the Pool object from the multiprocessing module, is the number of processes limited by the number of CPU cores? E.g. if I have 4 cores, even if I create a Pool with 8 processes, only 4 wil...

In Is OpenMP (parallel for) in g++ 4.7 not very efficient? 2.5x at 5x CPU, I determined that the performance of my programme varies between 11s and 13s (mostly always above 12s, and sometimes as sl...

I want to solve a mathematical problem with multiple threads in Java. my math problem can be separated into work units, that I want to have solved in several threads. I don't want to have a fixed ...

I have recently set up an instance (m4.4xlarge). when I execute 'lscpu' command, the output looks something like the following: CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 16...

I'm trying to find out where this value is stored in both windows and osx, in order to do some calculations to make a better task distribution. Core speed in Hz Thanks in advance. Using th...

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...

On my machine, windows 7 - Enterprise with 1 x Intel Xeon E5-1660 0 @ 3.30Ghz (6 cores/cpu with Hyper Threading activated), Environment.ProcessorCount return 12 which is exact. On a Windows Server...

I am running a spark cluster over C++ code wrapped in python. I am currently testing different configurations of multi-threading options (at Python level or Spark level). I am using spark with s...

I want to know the differences between 1. labs 2. workers 3. cores 4. processes Is it just the semantics or they are all different?

All is entirely theoretical, the question just came to mind and I wasn't entirely sure whats the answer: Assume you have an application that calculates 4 independent calculations. (Totally indepen...

Is there a simple way to find out the number of CPU's on a local machine using Go lang?

In some purpose it is needed to make JVM think about it runs on machine with Ncores on board instead of real number of cores (e.g. 4 cores instead of 16). JVM runs under some Linux build, based on...

I am trying to make an implementation using MPI and Fortran that separates processes wich are on the same node to groups. Does MPI have a routine that can identify that? I had the idea of separati...