Version 0.6.3 Release Candidate 2: Memory pools, minor fixes

[eyalroz]

Memory pool support (#249) and related changes

• Added a cuda::memory::pool_t proxy class
• Memory pools are created using cuda::memory::pool::create() or via device methods
• IPC: Can import (and export) pools and their allocations to/from other processes
• Move physical allocation namespace out of virtual_ and up into memory #485 Moved the physical_allocation namespace up from memory::virtual_ into memory, as it is used also for memory pools

API changes

• cuda::memory::host::allocate should return a region_t #488 cuda::memory::host::allocate() now returns a cuda::memory::region_t, for better consistency.
• Adopting code to cuda::kernel::wrap API changes #486 Some changes to cuda::kernel::wrap.
• Renamed cuda::memory::attribute_value_type_t -> cuda::memory::attribute_value_t
• cuda::span improvements #482 Improvements to the built-in cuda::span (which is used when std::span is unavailable) - making it somewhat more compatible with std::span
• Make more comparison operators constexpr and noexcept
• Support converting regions into spans - at least explicitly #483 It's now easier to convert memory::region_t's into typed spans.

CUDA 12 features support

• Support setting kernel block cluster dimensions #484 Can now set block clusters in launch configurations

Compatibility

• Wrappers now build correctly (again) with --std=c++20.
• Try to build an executable for each C++ version after 11 supported by the compiler #480 Add example program built with each C++ version after 11 supported by the compiler

Build issues

• Now requiring CMake version 3.25. You can download an up-to-date version from Kitware's website; it doesn't require any special installation.
• Switch from CUDA::nvToolkitExt to CUDA::nvtx3 (and to CMake 3.25) #490 Switched from depending on CUDA::nvToolkitExt to depending on CUDA::nvtx, for CUDA versions 10.0 and above.
• fatbin targets placed in "wrong" target folder #495 Now using correct output root dir for fatbin files used in example programs

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This discussion was created from the release Version 0.6.3 Release Candidate 2: Memory pools, minor fixes.