Performance - HP 330 Service Information Manual

Performance
The Model 350 computer provides 3-5 MIPS computational performance and offer high-
performance graphics display to match the CPU. They are typically used as group resource
workstations (shared by several designers) and as group computational and shared peripheral
resources when networked to lower performance workstations belonging to individual engineers.
These workstations must be able to run UNIX-based applications for:
• Advanced design tasks (ME, EE, and others)
• Expert Systems Development
• PC Board Routing
• Circuit Simulation
High-end workstations must be networked via industry-standard LAN, preferably have AT&T
System V UNIX
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operating system compatibility, high-resolution monochrome or color displays,
and very large RAM capacities.
Performance of Model 350 workstations is about four times that of a VAX 11/780* minicomputer
doing integer computation. Now, applications once limited to large mainframes can be executed
locally. New applications of artificial intelligence, coupled with design software, can now be
developed and significantly increase the productivity of the design professional.
Full potential of the MC68020 processor is realized by the use of a 32 Kbyte cache with 32-bit
wide entries operating at a 120 nsec cycle time (zero processor wait states). This large, high-
performance cache buffers the 25 MHz processor from the main memory operating at an average
180 nsec cycle time over a 32-bit wide system bus. Hewlett-Packard's custom Memory Man-
agement Unit (MMU) translates virtual memory addresses into physical memory addresses in
parallel with cache-miss detection (HP-UX only). This means that maximum system throughput
is maintained for very large programs and multiple processes.
*
Workstation vendors use the VAX 11/780 performance as the yardstick for system CPU performance (MIPS). Using this
yardstick makes the Model 350 a 4 MIPS system.
2
UNIX is a trademark of AT & T
4 Product Information