[petsc-users] memory control

[Jed Brown]

On Mon, Mar 18, 2013 at 10:15 AM, Zhang Wei <zhang.wei at chalmers.se> wrote:

> Hi
> I am new to the slepc, I am struggling with handson exercies "Exercise 5:
> Problem without Explicit Matrix Storage", it seems the memory cost is
> really big for the case, as i simply increase the size of case ,n, to 9600
> resulting cost around 8Gb memory during the runtime, and at beginning
> stage, it is clearly observed that each vector in krylove space cost 800Mb
> for 9600 elements case.. that is unreasonable.can any one help me on that ?
>

This doesn't sound right. Please send -log_summary output and explain what
you are doing.
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