Source file too large to compile at this optimization level

Accelerated Computing HPC Compilers nvc, nvc++ and nvfortran
1

I get this error sometimes, and I’m not exactly sure why, I don’t get it on all systems.

I can go into much more detail about how to reproduce if required. Happy to test out any flag suggestions to see if it can be resolved!

Thanks

2

This occurs when the internal complier data structures become too large. I don’t see this issue too often since we made a considerable effort to reduce the size of the data structures, but it can still occur.

If you are using high optimization, you can try reducing the opt level to -O1 or -O0. Though, I do see it on occasion, in particular with large C++ apps, when debugging (-g or -gopt) is enabled since Dwarf information uses a significant about of memory. If you are using “-g”, try removing it for this file.

If you can provide a reproducing example, I can create an issue report and have our engineers take a look.

-Mat

3

Thanks Mat, I do recall removing “-g” would let it build in one instance, but not always.

I will put together a docker container built from nvcr.io/nvidia/nvhpc:21.3-devel-cuda11.2-ubuntu20.04

4

It seems like I can reproduce this reliably on debian:testing and fedora:32, but on nothing else.