lun, 15 Feb 2010, Raul Miller skribis: > On Mon, Feb 15, 2010 at 11:00 AM, bill lam <[email protected]> wrote: > > Apart from the startup time and memory cost, the biggest problems are > > the need to tailor the algorithm by programmer for each for its > > applications, synchronisation of sessions, the memory bandwidth it > > took to transfer data between session. OTOH the low level solution is > > transparent, J programmers will not even need to aware its existence. > > Henry Rich had also suggested this approach if memory served me. > > One problem with the low level approach seems to be that, so > far, no one wants to fund the investigative costs associated with > this change. > > To my knowledge no one has even shown a "proof of concept" > implementation for any primitive.
There was but not been published, and that was discontinued some 15 years ago. At that time c complier did not support embedded assembly language and it needed to generate machine code on-the-fly to manipulate the FPU stacks. Hypothetically one could hack the J7 source code as a demonstration, but as what you said, no one come up as a patron. -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
