A Friendly Challenge for D

[Vijay Nayar]

On Saturday, 13 October 2018 at 18:14:20 UTC, Vijay Nayar wrote:
> On Saturday, 13 October 2018 at 18:05:45 UTC, Jabari Zakiya 
> wrote:
>>
>> It may be also running into a hard time limit imposed on 
>> compilation that Nim had/has that prevented my code from 
>> initially compiling. I'm generating a lot of PG parameter 
>> constants at compile time, and it's doing a lot of number 
>> crunching and building larger and larger arrays of constants 
>> as the PG's get larger.
>>
>> Try compiling with successive PG's (just P5, then P5 and P7, 
>> etc) to see where it fails. That will let you know the code is 
>> working correctly, and that the compiler is choking either/and 
>> because of a hard time limit and/or memory limit. That's why I 
>> put in a compiler output statement in 'genPGparameters' to see 
>> the progression of the PG parameters being built by the 
>> compiler to initially find when the compiler started choking. 
>> You may also need to patch whatever facility in the D compiler 
>> chain that controls this too.
>
> It's P17, the biggest one that takes the longest to build in 
> the Nim version. I actually don't know what memory limits exist 
> for the D compiler at compile-time, so I may need to do some 
> homework.

It's not just DMD either.

$ ldc2 twinprimes_ssoz.d
...
generating parameters for P17
Killed

$ gdc twinprimes_ssoz.d
...
generating parameters for P17
gdc: internal compiler error: Killed (program cc1d)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.

$ dmd twinprimes_ssoz.d
...
generating parameters for P17
Killed