J-machine: System support for actors. Memorandum report
The J-Machine in concert with its operating system kernel, JOSS, provides low-overhead system services to support actor programming systems. The J-Machine is not specialized to actor systems: instead, it provides primitive mechanisms for communication, synchronization, and translation. Communication mechanisms are provided that permit a node to send a message to any other node in the machine in < 2 microsecs. On message arrival, a task is created and dispatched in < 1 microsec. A translation mechanism supports a global virtual address space. These mechanisms efficiently support most proposed models of concurrent computation. The hardware is an ensemble of up to 65,536 nodes each containing a 36-bit processor, 4K 36-bit words of memory, and a router. The nodes are connected by a highspeed 3-D mesh network. The design was chosen to make the most efficient use of available chip and board area.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge, MA (USA). Microsystems Research Center
- OSTI ID:
- 5549555
- Report Number(s):
- AD-A-204210/9/XAB; VLSI-M--88-491
- Country of Publication:
- United States
- Language:
- English
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