4 ms·

Thanks, you're right on. That's what I'm after and that's exactly what Java needs to be useful for doing high performance computations in a sane fashion.

• dman 7y ago
  That ship has sailed.
  • abraxas 7y ago
    What do you mean?
    • dman 7y ago
      I think there was an opening for a fast safe alternative to C++ in HPC, but I think Rust has taken that spot now. Control over allocation, alignment and placement is important in HPC and imo Java took too long to address these issues.
• xxs 7y ago
  You have direct buffers but that's that... You can use multiple arrays of primitives, inverting the problem 90%. None of the solutions is optimal, easy to maintain, etc.
  • abraxas 7y ago
    Yes there is also the sun.misc.Unsafe class but of course that's skating on thin ice.
• seanmceligot 7y ago
  I switched to java from c in the mid 90's. I remember thinking how ridiculously wasteful it was to allocate an array on classes one at at time rather than as a block of memory. I think I was using berkeley DB at the time in c and it let you do that.