In [1]: 
Sys.CPU_CORES
Out[1]:
8
In [1]: 
n=2;  v=[randn(n,n) for i=1:8];
In [1]: 
w=0*v;
In [2]: 
@time begin
  w[1]=v[1]
  for i=2:8
        w[i]=w[i-1]*v[i]
  end
end

elapsed time: 0.239545243 seconds (12690944 bytes allocated)
In [3]: 
y=copy(v)
for i in [2,4,6,8]; y[i]=y[i-1]*y[i]; end
for i in [4,8];     y[i]=y[i-2]*y[i]; end
for i in [8];       y[i]=y[i-4]*y[i]; end
for i in [6];       y[i]=y[i-2]*y[i]; end
for i in [3,5,7];   y[i]=y[i-1]*y[i]; end
In [6]: 
([round(w[i],3) for i=7],[round(y[i],3) for i=7])
Out[6]:
({
2x2 Array{Float64,2}:
 48.771  62.993
  0.342   0.497},{
2x2 Array{Float64,2}:
 48.771  62.993
  0.342   0.497})
In [8]: 
addprocs(1)
Out[8]:
1-element Array{Any,1}:
 8
In [9]: 
r=[remotecall(i,randn,2,2) for i=1:8]
Out[9]:
8-element Array{Any,1}:
 RemoteRef(1,1,7) 
 RemoteRef(2,1,8) 
 RemoteRef(3,1,9) 
 RemoteRef(4,1,10)
 RemoteRef(5,1,11)
 RemoteRef(6,1,12)
 RemoteRef(7,1,13)
 RemoteRef(8,1,14)
In [10]: 
r=[@spawnat i randn(2,2) for i=1:8]
s=copy(r)
Out[10]:
8-element Array{Any,1}:
 RemoteRef(1,1,15)
 RemoteRef(2,1,16)
 RemoteRef(3,1,17)
 RemoteRef(4,1,18)
 RemoteRef(5,1,19)
 RemoteRef(6,1,20)
 RemoteRef(7,1,21)
 RemoteRef(8,1,22)
In [11]: 
for i in [2,4,6,8]; s[i]=@spawnat i fetch(s[i-1])*fetch(s[i]); end
for i in [4,8];     s[i]=@spawnat i fetch(s[i-2])*fetch(s[i]); end
for i in [8];       s[i]=@spawnat i fetch(s[i-4])*fetch(s[i]); end
for i in [6];       s[i]=@spawnat i fetch(s[i-2])*fetch(s[i]); end
for i in [3,5,7];   s[i]=@spawnat i fetch(s[i-1])*fetch(s[i]); end
In [12]: 
A=fetch(r[1])
(round(A,2),round(fetch(s[1]),2))
Out[12]:
(
2x2 Array{Float64,2}:
  1.03  -0.01
 -0.46  -0.26,

2x2 Array{Float64,2}:
  1.03  -0.01
 -0.46  -0.26)
In [12]: 
for i=2:8
    A=A*fetch(r[i]);
    println((round(A,2),round(fetch(s[i]),2)))
    println('\n')
    end;

(
2x2 Array{Float64,2}:
In [15]: 
function prefix(v,*) 
y=copy(v)
for i in [2,4,6,8]; y[i]=y[i-1]*y[i]; end
for i in [4,8];     y[i]=y[i-2]*y[i]; end
for i in [8];       y[i]=y[i-4]*y[i]; end
for i in [6];       y[i]=y[i-2]*y[i]; end
for i in [3,5,7];   y[i]=y[i-1]*y[i]; end
y
end
Out[15]:
# methods for generic function prefix
prefix(v,*) at In[15]:2
In [18]: 
prefix([1:8],+)
Out[18]:
8-element Array{Int64,1}:
  1
  3
  6
 10
 15
 21
 28
 36
In [6]: 
v=[ [k*100-99:k*100] for k=1:8]
Out[6]:
8-element Array{Array{Int64,1},1}:
 [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100]                                                                                                            
 [101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200]
 [201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300]
 [301,302,303,304,305,306,307,308,309,310,311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330,331,332,333,334,335,336,337,338,339,340,341,342,343,344,345,346,347,348,349,350,351,352,353,354,355,356,357,358,359,360,361,362,363,364,365,366,367,368,369,370,371,372,373,374,375,376,377,378,379,380,381,382,383,384,385,386,387,388,389,390,391,392,393,394,395,396,397,398,399,400]
 [401,402,403,404,405,406,407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,425,426,427,428,429,430,431,432,433,434,435,436,437,438,439,440,441,442,443,444,445,446,447,448,449,450,451,452,453,454,455,456,457,458,459,460,461,462,463,464,465,466,467,468,469,470,471,472,473,474,475,476,477,478,479,480,481,482,483,484,485,486,487,488,489,490,491,492,493,494,495,496,497,498,499,500]
 [501,502,503,504,505,506,507,508,509,510,511,512,513,514,515,516,517,518,519,520,521,522,523,524,525,526,527,528,529,530,531,532,533,534,535,536,537,538,539,540,541,542,543,544,545,546,547,548,549,550,551,552,553,554,555,556,557,558,559,560,561,562,563,564,565,566,567,568,569,570,571,572,573,574,575,576,577,578,579,580,581,582,583,584,585,586,587,588,589,590,591,592,593,594,595,596,597,598,599,600]
 [601,602,603,604,605,606,607,608,609,610,611,612,613,614,615,616,617,618,619,620,621,622,623,624,625,626,627,628,629,630,631,632,633,634,635,636,637,638,639,640,641,642,643,644,645,646,647,648,649,650,651,652,653,654,655,656,657,658,659,660,661,662,663,664,665,666,667,668,669,670,671,672,673,674,675,676,677,678,679,680,681,682,683,684,685,686,687,688,689,690,691,692,693,694,695,696,697,698,699,700]
 [701,702,703,704,705,706,707,708,709,710,711,712,713,714,715,716,717,718,719,720,721,722,723,724,725,726,727,728,729,730,731,732,733,734,735,736,737,738,739,740,741,742,743,744,745,746,747,748,749,750,751,752,753,754,755,756,757,758,759,760,761,762,763,764,765,766,767,768,769,770,771,772,773,774,775,776,777,778,779,780,781,782,783,784,785,786,787,788,789,790,791,792,793,794,795,796,797,798,799,800]
In [9]: 
p(a,b)=a[end]+b
Out[9]:
# methods for generic function p
p(a,b) at In[9]:1
In [10]: 
p(v[1],v[2])
Out[10]:
100-element Array{Int64,1}:
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
   ⋮
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
In [12]: 
prefix(map(cumsum,v),p)
Out[12]:
8-element Array{Array{Int64,1},1}:
 [1,3,6,10,15,21,28,36,45,55,66,78,91,105,120,136,153,171,190,210,231,253,276,300,325,351,378,406,435,465,496,528,561,595,630,666,703,741,780,820,861,903,946,990,1035,1081,1128,1176,1225,1275,1326,1378,1431,1485,1540,1596,1653,1711,1770,1830,1891,1953,2016,2080,2145,2211,2278,2346,2415,2485,2556,2628,2701,2775,2850,2926,3003,3081,3160,3240,3321,3403,3486,3570,3655,3741,3828,3916,4005,4095,4186,4278,4371,4465,4560,4656,4753,4851,4950,5050]                                                                                                                                                                                                                                                                    
 [5151,5253,5356,5460,5565,5671,5778,5886,5995,6105,6216,6328,6441,6555,6670,6786,6903,7021,7140,7260,7381,7503,7626,7750,7875,8001,8128,8256,8385,8515,8646,8778,8911,9045,9180,9316,9453,9591,9730,9870,10011,10153,10296,10440,10585,10731,10878,11026,11175,11325,11476,11628,11781,11935,12090,12246,12403,12561,12720,12880,13041,13203,13366,13530,13695,13861,14028,14196,14365,14535,14706,14878,15051,15225,15400,15576,15753,15931,16110,16290,16471,16653,16836,17020,17205,17391,17578,17766,17955,18145,18336,18528,18721,18915,19110,19306,19503,19701,19900,20100]                                                                                                                                            
 [20301,20503,20706,20910,21115,21321,21528,21736,21945,22155,22366,22578,22791,23005,23220,23436,23653,23871,24090,24310,24531,24753,24976,25200,25425,25651,25878,26106,26335,26565,26796,27028,27261,27495,27730,27966,28203,28441,28680,28920,29161,29403,29646,29890,30135,30381,30628,30876,31125,31375,31626,31878,32131,32385,32640,32896,33153,33411,33670,33930,34191,34453,34716,34980,35245,35511,35778,36046,36315,36585,36856,37128,37401,37675,37950,38226,38503,38781,39060,39340,39621,39903,40186,40470,40755,41041,41328,41616,41905,42195,42486,42778,43071,43365,43660,43956,44253,44551,44850,45150]                                                                                                    
 [45451,45753,46056,46360,46665,46971,47278,47586,47895,48205,48516,48828,49141,49455,49770,50086,50403,50721,51040,51360,51681,52003,52326,52650,52975,53301,53628,53956,54285,54615,54946,55278,55611,55945,56280,56616,56953,57291,57630,57970,58311,58653,58996,59340,59685,60031,60378,60726,61075,61425,61776,62128,62481,62835,63190,63546,63903,64261,64620,64980,65341,65703,66066,66430,66795,67161,67528,67896,68265,68635,69006,69378,69751,70125,70500,70876,71253,71631,72010,72390,72771,73153,73536,73920,74305,74691,75078,75466,75855,76245,76636,77028,77421,77815,78210,78606,79003,79401,79800,80200]                                                                                                    
 [80601,81003,81406,81810,82215,82621,83028,83436,83845,84255,84666,85078,85491,85905,86320,86736,87153,87571,87990,88410,88831,89253,89676,90100,90525,90951,91378,91806,92235,92665,93096,93528,93961,94395,94830,95266,95703,96141,96580,97020,97461,97903,98346,98790,99235,99681,100128,100576,101025,101475,101926,102378,102831,103285,103740,104196,104653,105111,105570,106030,106491,106953,107416,107880,108345,108811,109278,109746,110215,110685,111156,111628,112101,112575,113050,113526,114003,114481,114960,115440,115921,116403,116886,117370,117855,118341,118828,119316,119805,120295,120786,121278,121771,122265,122760,123256,123753,124251,124750,125250]                                              
 [125751,126253,126756,127260,127765,128271,128778,129286,129795,130305,130816,131328,131841,132355,132870,133386,133903,134421,134940,135460,135981,136503,137026,137550,138075,138601,139128,139656,140185,140715,141246,141778,142311,142845,143380,143916,144453,144991,145530,146070,146611,147153,147696,148240,148785,149331,149878,150426,150975,151525,152076,152628,153181,153735,154290,154846,155403,155961,156520,157080,157641,158203,158766,159330,159895,160461,161028,161596,162165,162735,163306,163878,164451,165025,165600,166176,166753,167331,167910,168490,169071,169653,170236,170820,171405,171991,172578,173166,173755,174345,174936,175528,176121,176715,177310,177906,178503,179101,179700,180300]
 [180901,181503,182106,182710,183315,183921,184528,185136,185745,186355,186966,187578,188191,188805,189420,190036,190653,191271,191890,192510,193131,193753,194376,195000,195625,196251,196878,197506,198135,198765,199396,200028,200661,201295,201930,202566,203203,203841,204480,205120,205761,206403,207046,207690,208335,208981,209628,210276,210925,211575,212226,212878,213531,214185,214840,215496,216153,216811,217470,218130,218791,219453,220116,220780,221445,222111,222778,223446,224115,224785,225456,226128,226801,227475,228150,228826,229503,230181,230860,231540,232221,232903,233586,234270,234955,235641,236328,237016,237705,238395,239086,239778,240471,241165,241860,242556,243253,243951,244650,245350]
 [246051,246753,247456,248160,248865,249571,250278,250986,251695,252405,253116,253828,254541,255255,255970,256686,257403,258121,258840,259560,260281,261003,261726,262450,263175,263901,264628,265356,266085,266815,267546,268278,269011,269745,270480,271216,271953,272691,273430,274170,274911,275653,276396,277140,277885,278631,279378,280126,280875,281625,282376,283128,283881,284635,285390,286146,286903,287661,288420,289180,289941,290703,291466,292230,292995,293761,294528,295296,296065,296835,297606,298378,299151,299925,300700,301476,302253,303031,303810,304590,305371,306153,306936,307720,308505,309291,310078,310866,311655,312445,313236,314028,314821,315615,316410,317206,318003,318801,319600,320400]
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In []: