GeantV: from CPU to accelerators

From Accelerators to Asteroids*

Cpu Cpu 1 Cpu 2 Cpu

Coherent-cache shared-memory architectures often give disappointing performance which can be alleviated by manual tuning. We describe a new trace analysis tool, clarissa, which helps diagnose problems and pinpoint their causes. Unusually, clarissa works by analysing potential contention, instead of measuring predicted contention by simulating a speciic memory system design. This is important be...

GPU-to-CPU Callbacks

We present GPU-to-CPU callbacks, a new mechanism and abstraction for GPUs that offers them more independence in a hetero-ion for GPUs that offers them more independence in a heterogeneous computing environment. Specifically, we provide a method for GPUs to issue callback requests to the CPU. These requests serve as a tool for ease-of-use, future proofing of code, and new functionality. We class...

6 - change 7 - changeIter . Excess CPU Excess CPU Excess CPU Excess CPU Excess CPU

MLAA: Efficiently Moving Antialiasing from the GPU to the CPU

Incompatibility with deferred lighting, which is used more and more in real-time rendering; High memory and processing cost, which makes its use prohibitive on some widely available platforms (such as the Sony Playstation* PS3* [Perthuis 2010]). This cost is also directly linked to the complexity of the scene rendered; Inability to smooth non-geometric edges unless used in conjunction with alph...