Question: Unbelievable Bug of Maple?!

When I run the following code in the in my two-core i5 CPU laptop, it just takes 35s.

 

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restart

with(Threads):

t := time[real]():

Seq(i+i*cos(i), i = 1 .. 3*10^6):

time[real]()-t

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But when running it on my new twenty-core E5 (two E5-2687w v3 actually) CPU workstation, it takes 120s, with the CPU usage nearly 100%

 

How can this be ?!

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