slightly optimized word2vec

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Original:
Starting training using file text8
Vocab size: 71291
Words in train file: 16718843
Alpha: 0.000005  Progress: 100.10%  Words/thread/sec: 53.22k 
real    51m5.959s
user    78m27.464s
sys     0m17.319s

Optimized:
Starting training using file text8
Vocab size: 71291
Words in train file: 16718843
Alpha: 0.000005  Progress: 100.10%  Words/thread/sec: 58.15k 
real    45m47.814s
user    71m50.251s
sys     0m13.984s

VM with openSUSE 12.3 AMD64
gcc (SUSE Linux) 4.7.2 20130108 [gcc-4_7-branch revision 195012]
2 cores by AMD Phenom(tm) II X4 925 Processor:

Original issue reported on code.google.com by [email protected] on 30 Nov 2014 at 12:49

Attachments:

• word2vec.patch