Hi allI followed some advice her and yes, IBM has a pretty advanced SIMD 
architecture from z13 onward.  I am not sure about previous attempts, but the 
current architecture seems to be pretty advanced.
BTW IBM claims that with 'arch(12)' COBOL. PL/I, C, Java will use that facility 
at least partially
see https://ibmsystemsmag.com/IBM-Z/01/2018/vector-facility-z14
Ze'ev Atlas

  

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