Nonconst reference to locked view buffer with in-place

[benson31]

Description

A non-Release build of Hydrogen has revealed that invariants are being violated in some in-place instances. The error being thrown is this one.

Steps to reproduce

1. Build Hydrogen with CMAKE_BUILD_TYPE=Debug (or anything that's not Release).
2. Build/link LBANN to that Hydrogen.
3. Run the ci_test/unit_tests/test_unit_layer_relu.py unit test.

Setting LBANN_NO_INPLACE=1 remedies the exception.

[tbennun]

Resolved?

[tbennun]

@benson31