Re: [Jprogramming] Experiment with (+/ .*)

2021-05-31 Thread Raul Miller
Specifically, the CursorWidth=10 goes in the user qtide.cfg config file. From the jqt menu system: Edit: Configure > Qt Ide to bring it up. FYI, -- Raul On Mon, May 31, 2021 at 11:40 AM chris burke wrote: > > > At least on Windows 10, JQt has the default cursor a thin flashing |, > which does

Re: [Jprogramming] Experiment with (+/ .*)

2021-05-31 Thread chris burke
> At least on Windows 10, JQt has the default cursor a thin flashing |, which does not get any thicker with making the font bigger. In the current Jqt there is an option for CursorWidth, e.g. try CursorWidth=10 On Mon, May 31, 2021 at 7:54 AM Imre Patyi wrote: > Dear Programming in J, > > Than

Re: [Jprogramming] Experiment with (+/ .*)

2021-05-31 Thread Imre Patyi
Dear Programming in J, Thank you for your responses. I should have updated to the current stable version. (I had thought it would wipe out the old version as some other programs do; but thankfully it did not.) Yes, now it is much faster on matrix multiplication. It is interesting that my laptop is

Re: [Jprogramming] Experiment with (+/ .*)

2021-05-24 Thread Joey K Tuttle
a) No apologies needed - thanks for all the work you do!! b) You give me incentive to move to 64 bit OS on the Pi -- Thanks! - joey > On 2021May 24, at 14:22, bill lam wrote: > > a. I'm lazy, sorry about that. I'll update when I have time. > b. only arm64 has decent support of simd. > > On

Re: [Jprogramming] Experiment with (+/ .*)

2021-05-24 Thread bill lam
a. I'm lazy, sorry about that. I'll update when I have time. b. only arm64 has decent support of simd. On Tue, May 25, 2021, 5:15 AM Joey K Tuttle wrote: > Good segue into a couple of questions that have been on my mind. > > a) Any thoughts comments on a current Beta release for Raspbian? > > b)

Re: [Jprogramming] Experiment with (+/ .*)

2021-05-24 Thread Joey K Tuttle
Good segue into a couple of questions that have been on my mind. a) Any thoughts comments on a current Beta release for Raspbian? b) Are there strong reasons to move to a 64 bit OS on the Raspberry Pi? - joey > On 2021May 24, at 13:54, bill lam wrote: > > Matrix multiplication on arm64 andr

Re: [Jprogramming] Experiment with (+/ .*)

2021-05-24 Thread bill lam
Matrix multiplication on arm64 android should already be fully optimized, including Blas routine with arm64 asimd kernel Openmp multithreading Optimized on desktop too, J runs as fast as other multithreaded optimized blas lapack such as openblas. On Mon, May 24, 2021, 3:53 PM Ric Sherlock wr

Re: [Jprogramming] Experiment with (+/ .*)

2021-05-24 Thread Ric Sherlock
Just to provide some context to Henry's statement that things have changed a bit since J8.05, below are the timings I get on my phone (Pixel 4a) using J902. ,.f"0]2^>:i.13 0.024127 1e_5 2e_6 3e_6 3.4e_5 0.000909 0.000425 0.012697 0.020461 0.139175 1.00075 6.6658 56.7179 On Mon,

Re: [Jprogramming] Experiment with (+/ .*)

2021-05-23 Thread Henry Rich
J8.05 is very out-of-date for +/ . * .  Since then I have rewritten the JE code a couple of times: the current version is pretty fast and has special code depending on matrix sizes. If you are doing performance measurement you need to get an up-to-date J.  Many primitives and combinations run

[Jprogramming] Experiment with (+/ .*)

2021-05-23 Thread Imre Patyi
Dear Programming in J, I made another test of numerical calculation in J, this time looking at multiplying two matrices using (+/ .*) and here is what I have found. It seems to me that J with (+/ .*) has acceptable speed only for matrices of order about 128 or below, after which order it quickly