{
  "annotation_id": "82a62acb-df23-4d9c-97ce-7d2b7a484607",
  "date_created": "2026-03-02T18:00:53.355000Z",
  "date_modified": "2026-03-02T18:00:53.355000Z",
  "file_hash": "96e95b9cbfa444ec1a0be035608136ede4406cb1f54817e22ae8d7b46bf3d0b6",
  "private": false,
  "record": {
    "abstract": "A high performance Beowulf (PC cluster) machine installed with Linux\noperating system and MPI (Message Passing Interface) for interprocessor\ncommunications has been constructed using Gigabit Ethernet and the\ncommunication software GAMMA (Genoa Active Message Machine), instead of the\nstandard TCP/IP protocol. Fast C/Fortran compilers have been exploited with the\nGAMMA communication libraries. This method has eliminated large communication\noverhead of TCP/IP and resulted in significant increase in the computational\nperformance of real application programs including the first-principle\nmolecular dynamics simulation code. Scalability on the number of processors and\nreliability over a long period of time (days) have also been confirmed for the\nGAMMA communications.\n  Keywords: non TCP/IP, active messages, small latency, fast C/Fortran\ncompilers, first-principle (quantum mechanical) molecular dynamics, advanced\nmaterials",
    "arxiv_id": "physics/0407152",
    "authors": [
      "Motohiko Tanaka"
    ],
    "categories": [
      "physics.comp-ph"
    ],
    "title": "PC Cluster Machine Equipped with Low-Latency Communication Software",
    "url": "https://arxiv.org/abs/physics/0407152"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2e416cf2-ba6e-4873-8430-68f693b59a34",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}