问题描述
我在使用 foreach 包并行 MSGARCH 时遇到了一些麻烦。当我使用 %do% 时，一切正常，因为它是按顺序处理的。但是，当我使用 %dopar% 时，会发生错误。代码如下：
library(parallel); library(foreach); library(doParallel)
numCores <- detectCores();numCores
registerDoParallel(numCores)
residuosp_confirmed = c(-0.0196875366159436,0.00325443127173577,0.0182816284009416,0.0192446651938748,0.00727550837699058,-0.00999897450094205,-0.0212720835440839,-0.0192817949364019,-0.00535239570149668,0.0120597269453738,0.0217378727204427,0.017737009818541,0.00279267525250477,-0.0141336585344371,-0.022159863506126,-0.0161684683146264,-6.29614361339562e-05,0.0161183762143486,0.0221921171437408,0.0143172587608738,-0.0024993188612204,-0.0178564942071159,-0.0219507373320812,-0.0123484948718229,0.00502294737631941,0.0192785513571538,0.0214850694443236,0.0102484661431422,-0.00742198690135835,-0.0205036291642626,-0.0206629774349384,-0.00807466097992956,0.00958801203908789,0.0213286302464695,0.0198641012505057,0.00612996178140447,-0.01126495676855,-0.0217711790235895,-0.0183296265942021,-0.00397122365318793,0.0135744821158487,0.0217166706792698,0.0164431859793376,0.00318083068541324,-0.0153337496395438,-0.0168318358577133,-0.0124564763090568,-0.00560412839127421,0.00798634418141394,0.0241547777864991,0.0283247142244195,0.0326634428870256,0.0338032418120409,-0.0309089829915761,-0.0118948170606764,-0.0149851739107048,-0.0301663401729663,0.00572367889175109,0.0749695697436577,-0.0385487421898849,-0.0311637967397238,0.0550533740233793,-0.0558319261056033,-0.179722926116892,0.0645793594939214,0.195615688800576,0.201602293259364,-0.0857029522415413,-0.304812541019657,-0.343785934964325,-0.0193536740092431,0.154892832064571,0.227080031906639,0.247042094989573,0.00468354741126695,-0.0972809286263443,-0.237583268178664,-0.309865066683055,0.0940247515243544,0.401155571026064,0.274566110649214,0.0413989102283142,-0.150455877021988,-0.107660184622748,-0.334135048043844,-0.126277820932189,0.335186226996402,0.277640177792035,-0.00204721794142648,0.0236693324340407,-0.331548217518189,-0.407888322282594,-0.0221193962320836,0.284434742332657,0.450910290618038,0.293599374360697,-0.0902823610810239,-0.366837405564773,-0.453603535222909,-0.275745020887442,0.429494139040331,0.430138861008622,0.157034239142103,-0.103282137356553,-0.261606735967327,-0.334059714292657,-0.0513886375995055,0.257052930337833,0.460801822346426,0.107235405958507,-0.206004284348478,-0.182409505034553,-0.393224112580217,-0.000699808392974115,0.2107427060963,0.37051985059476,-0.0178820975270486,-0.0530665738933614,-0.232390867400116,-0.250988437739553,0.0476025555059126,0.207364084830832,0.195665759660895,0.138343841812137,-0.0248232472674759,-0.103145294816385,-0.307409184908437,-0.186774880511828,0.12037419781335,0.35191978344821,0.162994478551899,-0.161765463824254,-0.109245636987554,-0.215234362709374,-0.15379580920973,0.268985900209686,0.326052062820931,0.112949640642254,-0.10916274612397,-0.273147130427355,-0.225904368331137,-0.0535022858502821,0.213962400864431,0.458223952226378,0.0792445872222229,-0.262342104863832,-0.310869593544637,-0.14596745781693,0.0147767210029759,0.291042783662462,0.462046848530148,-0.18524228143278,-0.323491015339061,-0.13840542493231,-0.207961132162425,-0.0315800080669762,0.478666379493214,0.358646718806687,-0.00223810139391538,-0.458926857687976,-0.542469522679019,-0.198630288150908,0.53019461438016,0.695356743440516,0.230989228884446,0.105255080892084,-0.889964499522834,-0.424026685775305,-0.179025286557036,0.115074098844135,0.755834975364839,0.493243649024643,-0.0557647061305075,-0.676483611348495,-0.527852568459921,-0.411719363785436,0.403884323298847,0.889996670591729,0.4830529567927,-0.102768061596523,-0.517427632806724,-0.674850884272866,-0.225711216708831,0.0667212242576542,0.834913547293299,0.822765382108459,-0.141373498257285,-0.945823081900105,-0.829508223814126,-0.133408837966964,0.306494619450977,1.06706072390013,0.882624968503112,-0.0979854436910752,-0.947462466487382,-0.496693360005315,-0.421860718154182,0.110255891184119,0.643500230177106,0.720063055571549,0.0556716534883973,-0.395779616552298,-0.776873879924312,-0.370869581562704,-0.343580635620593,1.07050858919907,0.893667752892966,0.144149903535234,-0.689331347864336,-0.610373303072764,-0.204106922367902,-0.0557060791181194,0.585109579687194,0.710859262384192,0.0174141036808852,-0.466871091388327,-0.626763671898102,-0.297753001433115,0.040555895564039,0.564626235801996,0.705799286675642,0.0750613044187593,-0.478737190261705,-0.487080519650291,-0.570108362865829,-0.316410770808425,0.641599306385284,1.09437775518271,0.677757969589283,-0.279199281909371,-0.768187524460682,-0.688781445913068,-0.516372624117536,0.53660985088371,0.794345050014078,0.289416759410566,-0.264440031616523,-0.360220781758186,-0.519053840344975,-0.138096076672349,0.505076752726044,0.361358239881256,-0.254043907425136,0.341922351004651,-0.16155210041353,-0.619706033381399,-0.205795751346826,0.414125857617523,0.741315042749241,0.388243292958371,-0.418276395198082,-0.347489603765833,-0.66652960594701,-0.421345746166661,0.652733059555744,1.08021633725686,0.205045469739519,-0.47552565817178,-0.78068196906867,-0.653369814013868,0.105357406204062,0.617608779663909,0.96466240155043,0.405586776519645,-0.637162154413196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#Sorry for this big vector,but it's for keeping the reproducibility of my issue
modelo = c("sARCH","sGARCH","tGARCH","eGARCH","gjrGARCH")
distribuicao = c("norm","std","ged","snorm","sstd","sged")
#Here using %do%. Works fine,but it's not working in parallel
system.time({
abdi1<-foreach(m=1:5) %:%
foreach(d=1:6) %do% {try(FitML(spec = CreateSpec(variance.spec=list(model = modelo[m]),distribution.spec=list(distribution = distribuicao[d]),switch.spec = list(do.mix = FALSE,K = 2)),data = residuosp_confirmed))}
})
abdi1 #Here it will show all the results.
#Here using %dopar%.
system.time({
abdi2<-foreach(m=1:5) %:%
foreach(d=1:6,.packages = c("MSGARCH")) %dopar% {
MSgarch_settings <- CreateSpec(variance.spec=list(model = modelo[m]),K = 2))
try(FitML(spec = MSgarch_settings,data = residuosp_confirmed))
}
})
abdi2 #An error occurs
[[1]]
[[1]][[1]]
Error in .External(list(name = "CppMethod__invoke_notvoid",address = <pointer: (nil)>,:
NULL value passed as symbol address
谁能帮我解决这个问题？谢谢！！！ （PS：我已经尝试过之前在 Stack Overflow 上发布的建议，但没有奏效）。 Abdinardo Oliveira 博士。
解决方法
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