NeuraViz results for Experiment: NeuraChip_4x4
Simulation Results
NeuraSim performance metrics
Performance Metric |
Value |
Description |
|---|---|---|
| Experiment Name | Name of the experiment | |
| Compute Units | Number of NeuraCores and NeuraMems in each row and column of the mesh | |
| Frequency | Operating frequency of the NeuraChip | |
| Peak Performance | Peak FLOPs | |
| SpGEMM Performance | Sparse Matrix Multiplication average performance | |
| On Chip Memory | On chip memory size | |
| Off Chip Memory | HBM size | |
| Technology | Synthesizing technology | |
| Chip Area | Total chip area of NeuraChip | |
| Area Efficiency | Area efficiency of NeuraChip accelerator |
Simulation Results
NeuraSim performance metrics
Performance Metric |
Value |
Description |
|---|---|---|
| Total Cycles | Total number of cycles in the experiment | |
| Execution Time | Time taken by accelerator to complete the workload | |
| Simulator Wall Time | Total wall time required to complete the simulation | |
| Average Simulation Speed (MCPS) | Mean cycles per second in the simulation | |
| Total Memory Requests | Total memory requests made | |
| Total Memory Responses | Total memory responses received | |
| Total Hash Requests | Total hash requests made | |
| Total Hash Responses | Total hash responses received |
NeuraCore Busy Cycles
Percentage of total cycles that the NeuraCore spent computing (Not Stalled).
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NeuraMem Busy Cycles
Percentage of total cycles that the NeuraMem spent computing (Not Stalled). This includes TAG comparisons in HashPad memory as well as DATA accumulations.
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Register File Cycles Spent Histogram
A higher value indicates instructions are not being computed in NeuraCore as they await accumulation in NeuraMem units
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NeuraRouter Busy Cycles
Percentage of total cycles that the NeuraRouter spent computing (Transferring data from one port to another).
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Memory Controller Access Profile
Y axis represents the memory address of read and write transaction, X axis is the cycle number at which the transaction was made.
Yellow = Write transactions, Blue = Read transactions.
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Connections Busy Cycles
Percentage of total cycles that the connection (link between NeuraCore/NeuraMem and NeuraRouter) spent computing (Transferring data from one Core to Router or Memory to Router).Click here to enlarge plot
Writer Busy Cycles
Percentage of total cycles that the Writer spent computing (Transferring data from NeuraMem HashPads to DRAM memory banks).
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Memory Controller Stall Profile
Total cycles that the Memory Controller Channels and Writers were stalled, awaiting a READ or WRITE memory transaction.
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Writer Iterative Profile (Writer Pressure)
This is a continuous interval plot, where X axis represents the cycle number and Y axis represents the percentage of cycles the Writer was busy. Over 100% value indicates the writer buffers are overflowing.
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Average In Flight Memory Transactions per Cycle (Memory Pressure)
This is a continuous interval plot, where X axis represents the cycle number and Y axis represents the average number of memory transactions in flight. This metric is a good indicator of memory pressure.
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NeuraCore Iterative Profile (Individual NeuraCore Pressure)
This is a continuous interval plot, where X axis represents the cycle number and Y axis represents the percentage of cycles the NeuraCore was busy. Over 100% value indicates the NeuraCore buffers are overflowing.
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NeuraMem Iterative Profile (Individual NeuraMem Pressure)
This is a continuous interval plot, where X axis represents the cycle number and Y axis represents the percentage of cycles the NeuraMem was busy. Over 100% value indicates the NeuraMem buffers are overflowing.
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NeuraRouter Iterative Profile (Individual NeuraRouter Pressure)
This is a continuous interval plot, where X axis represents the cycle number and Y axis represents the percentage of cycles the NeuraRouter was busy. Over 100% value indicates the NeuraRouter buffers are overflowing.
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Memory Controller Iterative Profile (Individual Memory Controller Pressure)
This is a continuous interval plot, where X axis represents the cycle number and Y axis represents the percentage of cycles the Memory Controller was busy. Over 100% value indicates the Memory Controller buffers are overflowing.