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Jun
26
asked How to get correct numerical integration which should be zero?
Jun
26
accepted Strange numerical integration result
Jun
26
comment Strange numerical integration result
Thank you very much! Trace is so useful!
Jun
26
comment Strange numerical integration result
What is more, the integration of berrycur is rather slow, it tooks me 40 seconds to give result 12.5664. Do you know how to speed it up?
Jun
26
comment Strange numerical integration result
Hi, MikeLimaOscar! Great explanation! How did you come up with the idea to test Integrate[berrycur[x, y][[1]], x, y]? This explains the unreasonable result. But I still want to know why Integrate gives (x^2 y)/2??? It seems that (x^2 y)/2 is the integration of x y in terms of x.
Jun
25
revised Strange numerical integration result
added 143 characters in body
Jun
25
revised Strange numerical integration result
added 8 characters in body
Jun
25
asked Strange numerical integration result
Feb
12
awarded  Popular Question
Feb
10
awarded  Popular Question
Jan
3
awarded  Necromancer
Dec
25
awarded  Popular Question
Dec
18
comment How to constrain memory usage on HPC?
Sorry for late response. I tried Evaluation -> Parallel Kernel Configuration, uncheck the "try to relaunch failure kernels". But it didn't work.
Dec
14
comment How to constrain memory usage on HPC?
I currently use Linux and Mathematica 8. I don't know how to use lowlevel link-communication to do this. But I found that even if you don't evaluate ParallelTable expression. Just a normal non-parallel expression like RandomInteger[100, {500, 500, 500}] for second time, the memory will still not get controlled.
Dec
14
comment How to constrain memory usage on HPC?
Thank you halirutan! I tried your code. But it seems that it doesn't work. Try ParallelTable[tt[i] = RandomInteger[100, {500, 500, 500}], {i, 1, 2}], you will see that the kernels are closed at first, then relaunched automatically and evaluate well give the result regardless of the memory
Dec
13
revised How to constrain memory usage on HPC?
added 16 characters in body
Dec
12
revised how to deal with so many digits in plot ticks
added 213 characters in body
Dec
12
comment how to deal with so many digits in plot ticks
this is a possible way, thank you for your suggestion
Dec
12
comment how to deal with so many digits in plot ticks
@Kuba @SjoerdC.deVries Thank you for your information! I learned to style ticks. A custom tickformat is useful.
Dec
12
asked how to deal with so many digits in plot ticks