Qlogic InfiniPath QHT7140 Specifications

InfiniPath
QHT7140
HyperTransport HTX to InfiniBand
4X Adapter
the InfiniPath htX InfiniBand adapter delivers industry-lead-
ing performance in a cluster interconnect, allowing organiza-
tions to gain maximum advantage and return on their invest-
ment in clustered systems by driving up the utilization of the
computing infrastructure.
the InfiniPath adapter yields the lowest latency, the highest
message rate and highest effective bandwidth of any cluster
interconnect available. as a result, organizations relying on
clustered systems for critical computing tasks will experience
a significant increase in productivity.
Benefits
• Increases cluster efficiency and application productivity
• Provides superior application scaling to 1000s of CPUs
• enables faster application run times for faster
time-to-solution
•
Increases utilization of computing infrastructure
• Increases ROI of computing assets
Features
• htX to InfiniBand 4X adapter
• htX half-height short form factor
• 1.29 μs one-way MPI latency through an InfiniBand switch
• 954 MB/s uni-directional bandwidth
• 88 byte n1/2 streaming message size (1 CPU core)
• 3 year hardware warranty
®
Superior Application Performance.
message rates result in superior real-world application scalability across nearly all
modeling and simulation applications.
Well-known applications that have demonstrated superior scaling and outstanding
performance when running on clusters with the InfiniPath interconnect include: NaMD,
amber8, Petsc, star-CD, Fluent, NWChem, DL_POLY, Ls-DYNa, WRF, POP, MM5,
LaMMPs, GaMess, CPMD, aM2, ChaRMM, GROMaCs and many others.
Highest Effective Bandwidth and Message Rate.
the InfiniPath bandwidth curve rises faster than any other adapter.
the InfiniPath htX adapter delivers significantly more bandwidth at message sizes
typical of real-world hPC applications and many enterprise applications. It also deliv-
ers the highest effective bandwidth of any cluster interconnect because it achieves
half its peak bandwidth (n1/2)
industry. this means that applications run faster on the InfiniPath adapter than on any
other interconnect.
such superior performance is a benefit of the unique, highly-pipelined, cut through
design that initiates a new message much faster than competitive alternatives. this
approach allows application message transmission to scale close to linearly when ad-
1
ditional CPU cores are added to a system, dramatically reducing application run times.
1
Other less effective interconnects can become a performance bottleneck, lowering the
1
return on investment of your computing resources.
Lowest MPI & TCP Latency.
1.29 microseconds
Unlike other interconnects, its random-ring latency for up to 256 CPUs, as measured
D a t a s h e e t
the InfiniPath adapter's low latency and high
Because of its high messaging rate,
2 at a message size of just 385 bytes, the lowest in the
the InfiniPath industry-leading MPI ping-pong latency of
2 (μs) is less than half of the latency of other InfiniBand adapters.