[Info-vax] Python for x86?

[Arne Vajhøj]

On 5/3/2023 11:45 AM, Arne Vajhøj wrote:
> On 5/2/2023 1:27 PM, Simon Clubley wrote:
>> std::string would be interesting here if you have access to a C++ 
>> compiler.
> 
> C++ on Alpha simulator gives 0.005.

Note that is with an inner loop of:

         for(int j = 0; j < N / VMS_FACTOR; j = j + 10)
         {
             s = ALFA + ALFA;
             int ix = (i + j) % ALFA.length();
             buf.append(s, ix, 1);
             buf.append(s, ix + 1, 2);
             buf.append(s, ix + 3, 3);
             buf.append(s, ix + 6, 4);
         }

not:

         for(int j = 0; j < N / VMS_FACTOR; j = j + 10)
         {
             s = ALFA + ALFA;
             int ix = (i + j) % ALFA.length();
             buf = buf + s.substr(ix, 1) + s.substr(ix + 1, 2) + 
s.substr(ix + 3, 3) + s.substr(ix + 6, 4);
         }

That ones gives 0.004 - and without the VMS_FACTOR then that
one would totally die performance wise.

Arne