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Disclosed is a method that proposes a switchless method for building meshes for massively parallel computers (MPC). Benefits include the ability for the system to grow to thousands of nodes.
English (United States)
This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately
52% of the total text.
A Switchless Method for Building
High-Dimensional Meshes for Massively Parallel Computers
Disclosed is a method that proposes a switchless method for
building meshes for massively parallel computers (MPC). Benefits include the
ability for the system to grow to thousands of nodes.
In the past few years there has been a shift away from
building Massively Parallel Processor (MPP) systems using custom chips. The
motivation for this change has been a desire to reduce the system cost. The
down side of this trend is a growing imbalance between the power of the
processors, measured in millions of floating points per second, and the
interconnect performance.� There are two
aspects to interconnect performance: the data throughput per link between
processors, and the bisection bandwidth.�
The bisection bandwidth is the aggregate data rate across an imaginary
line or plane dividing the nodes in a system.�
There has been a regression in both numbers. This is shown in Figure
The most common interconnect industry-standard technology
today is Ethernet, both 100 Mbit/s Fast Ethernet and Gigabit Ethernet.� The nodes in a cluster are usually connected
through an Ethernet switch.� The
topology is shown in Figure 2.� The
bisection bandwidth in an Ethernet switch internal bus is usually less than the
aggregate bandwidth of the ports in the switch.� This cross-section bandwidth can’t be grown as more nodes are
added, ultimately limiting the practical number of nodes in a cluster....