Section: New Results

Structural Modeling of Heterogeneous Memory Architectures

hwloc (see Section 6.6) is the de facto standard tool for gathering information of parallel platform topologies. The advent of new memory architecture, with high-bandwidth and/or non-volatile memories cause the memory management subsytem complexity to increase. Indeed, besides taking care of allocating data buffers locally, developers also have to choose between different local memories with different performance and persistence characteristics. Moreover, the operating systems still cannot expose the full details about these technologies to applications. We modified the hwloc tool to cope with these new needs in collaboration with Intel. This work led to the design a new structural model for platforms with heteregeneous memories [10].