Subkernel memory control in Mathematica -


i have similar question as: mathematica running out of memory

i interested in this:

paralleltable[f[i], {i, 0, 14.9, 0.001}] 

where f[i] complicated numerical integral (i haven't yet found easy way reproduce problem without page filling definitions integral).

my problem subkernels blow in memory , have stop evaluation if won't let machine swapping.

but if have stopped evaluation kernels won't give free occupied memory.

clearsystemcache[]  

i have tried

parallelevaluate[clearsystemcache[]] 

but

parallelevaluate[memoryinuse[]] 

stays @

{823185944, 833146832, 812429208, 840150336, 850057024, 834441704,  847068768, 850424224} 

it seems memory controlling works main kernel? way shut down kernels , launch them again.

i hope there solutions out there... lot.

memory control works kernel control expressions involving such functions memoryconstrained, memoryinuse, clear, unset, remove, $historylength, clearsystemcache etc. evaluated. seems in case source of memory leaks not due mathematica's internal caching mechanism (thanks link, btw!).

have tried evaluate $historylength=0; in subkernels before using them computations? if have not yet, recommend try.

since working numerical integration functions, suggest try optimize usage of them. example, if make numerical integration using ndsolve , need limited set of calculated points (or 1 point) should use form ndsolve[eqns,y,{x,x_needed_min,x_needed_max}] (or ndsolve[eqns,y,{x,x_max,x_max}]) instead of ndsolve[eqns,y,{x,x_min,x_max}] or ndsolve[eqns,y,{x,0,x_max}]. can dramatically reduce memory usage in cases! can use eventlocator memory control.


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