Tagged Questions

3
votes
1answer
1k views

Why is Ubuntu detecting only one processor core?

My processor is Intel P6100 which is a Dual Core processor. When I do cat /proc/cpuinfo this is what get varun@varun-K52F:~$ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu ...
6
votes
3answers
3k views

How many maximum CPUs does Ubuntu support by default?

I think this is kernel dependent and probably will change over time depending on the kernel a release uses, correct me if wrong I'd like to know two things for all the currently supported Ubuntu ...
0
votes
2answers
397 views

mpirun -np N, what if N is larger than my core number?

Say I have a 4-core workstation, what would linux (Ubuntu) do if I execute mpirun -np 9 XXX Q1. Will 9 run immediately together, or they will run 4 after 4? Q2. I suppose that using 9 is not good, ...