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The below table summarises the Voltage Capture (VCS) data rates with 1.28 MHz channels, 0.781 μs critically sampled.
| 1 Channel | 24 Channels | |||
|---|---|---|---|---|
| Tiles | GB/s | TB/hr | GB/s | TB/hr |
| 128 | 0.66 | 2.37 | 15.83 | 56.98 |
| 136 | 0.70 | 2.52 | 16.82 | 60.54 |
| 144 | 0.74 | 2.67 | 17.81 | 64.10 |
Correlator
Correlator Modes
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| Note |
|---|
The MWAX software is flexible and is able to handle all available modes, but is limited by the hardware the software runs on. As a result, for any particular MWA configuration of N tiles, not all modes are able to be run in real time. |
Frequency:
Fine Channel Width (kHz) | 0.2 | 0.4 | 0.8 | 1.0 | 1.6 | 2.0 | 3.2 | 4.0 | 5.0 | 6.4 | 8.0 | 10.0 | 12.8 | 16.0 | 20.0 | 25.6 | 32.0 | 40.0 | 51.2 | 64.0 | 80.0 | 128.0 | 160.0 | 256.0 | 320.0 | 640.0 | 1280.0 |
| Number of fine channels per coarse | 6400 | 3200 | 1600 | 1280 | 800 | 640 | 400 | 320 | 256 | 200 | 160 | 128 | 100 | 80 | 64 | 50 | 40 | 32 | 25 | 20 | 16 | 10 | 8 | 5 | 4 | 2 | 1 |
Time:
Integration time (seconds) | 0.25 | 0.50 | 1.0 | 2.0 | 4.0 | 8.0 |
Correlator Data Rates
Legend:
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| Info |
|---|
Note: when in extended / long baseline configuration, most science cases will require the 10 kHz, 0.5 sec mode at a minimum until the unless fringe stopping feature is enabled |
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Data Rates at 144T
| cell values = Total data size (GB/s) | Time Resolution (s) | |||||||
|---|---|---|---|---|---|---|---|---|
fscrunch | fine chans per coarse | fine chan width kHz | 0.25 | 0.5 | 1.0 | 2.0 | 4.0 | 8.0 |
| 1 | 1280 | 0.2 | 204.55 | 102.28 | 51.14 | 25.57 | 12.78 | 6.39 |
| 2 | 640 | 0.4 | 102.28 | 51.14 | 25.57 | 12.78 | 6.39 | 3.20 |
| 4 | 320 | 0.8 | 51.14 | 25.57 | 12.78 | 6.39 | 3.20 | 1.60 |
| 5 | 256 | 1.0 | 40.91 | 20.46 | 10.23 | 5.11 | 2.56 | 1.28 |
| 8 | 160 | 1.6 | 25.57 | 12.78 | 6.39 | 3.20 | 1.60 | 0.80 |
| 10 | 128 | 2.0 | 20.46 | 10.23 | 5.11 | 2.56 | 1.28 | 0.64 |
| 16 | 80 | 3.2 | 12.78 | 6.39 | 3.20 | 1.60 | 0.80 | 0.40 |
| 20 | 64 | 4.0 | 10.23 | 5.11 | 2.56 | 1.28 | 0.64 | 0.32 |
| 25 | 51.2 | 5.0 | 8.18 | 4.09 | 2.05 | 1.02 | 0.51 | 0.26 |
| 32 | 40 | 6.4 | 6.39 | 3.20 | 1.60 | 0.80 | 0.40 | 0.20 |
| 40 | 32 | 8.0 | 5.11 | 2.56 | 1.28 | 0.64 | 0.32 | 0.16 |
| 50 | 25.6 | 10.0 | 4.09 | 2.05 | 1.02 | 0.51 | 0.26 | 0.13 |
| 64 | 20 | 12.8 | 3.20 | 1.60 | 0.80 | 0.40 | 0.20 | 0.10 |
| 80 | 16 | 16.0 | 2.56 | 1.28 | 0.64 | 0.32 | 0.16 | 0.08 |
| 100 | 12.8 | 20.0 | 2.05 | 1.02 | 0.51 | 0.26 | 0.13 | 0.06 |
| 128 | 10 | 25.6 | 1.60 | 0.80 | 0.40 | 0.20 | 0.10 | 0.05 |
| 160 | 8 | 32.0 | 1.28 | 0.64 | 0.32 | 0.16 | 0.08 | 0.04 |
| 200 | 6.4 | 40.0 | 1.02 | 0.51 | 0.26 | 0.13 | 0.06 | 0.03 |
| 256 | 5 | 51.2 | 0.80 | 0.40 | 0.20 | 0.10 | 0.05 | 0.02 |
| 320 | 4 | 64.0 | 0.64 | 0.32 | 0.16 | 0.08 | 0.04 | 0.02 |
| 400 | 3.2 | 80.0 | 0.51 | 0.26 | 0.13 | 0.06 | 0.03 | 0.02 |
| 640 | 2 | 128.0 | 0.32 | 0.16 | 0.08 | 0.04 | 0.02 | 0.01 |
| 800 | 1.6 | 160.0 | 0.26 | 0.13 | 0.06 | 0.03 | 0.02 | 0.01 |
| 1280 | 1 | 256.0 | 0.16 | 0.08 | 0.04 | 0.02 | 0.01 | <0.01 |
| 1600 | 0.8 | 320.0 | 0.13 | 0.06 | 0.03 | 0.02 | 0.01 | <0.01 |
| 3200 | 0.4 | 640.0 | 0.06 | 0.03 | 0.02 | 0.01 | <0.01 | <0.01 |
| 6400 | 0.2 | 1,280.0 | 0.03 | 0.02 | 0.01 | <0.01 | <0.01 | <0.01 |
Data Rates at 136T
| cell values = Total data size (GB/s) | Time Resolution (s) | |||||||
|---|---|---|---|---|---|---|---|---|
fscrunch | fine chans per coarse | fine chan width kHz | 0.25 | 0.5 | 1.0 | 2.0 | 4.0 | 8.0 |
| 1 | 1280 | 0.2 | 182.49 | 91.25 | 45.62 | 22.81 | 11.41 | 5.70 |
| 2 | 640 | 0.4 | 91.25 | 45.62 | 22.81 | 11.41 | 5.70 | 2.85 |
| 4 | 320 | 0.8 | 45.62 | 22.81 | 11.41 | 5.70 | 2.85 | 1.43 |
| 5 | 256 | 1.0 | 36.50 | 18.25 | 9.12 | 4.56 | 2.28 | 1.14 |
| 8 | 160 | 1.6 | 22.81 | 11.41 | 5.70 | 2.85 | 1.43 | 0.71 |
| 10 | 128 | 2.0 | 18.25 | 9.12 | 4.56 | 2.28 | 1.14 | 0.57 |
| 16 | 80 | 3.2 | 11.41 | 5.70 | 2.85 | 1.43 | 0.71 | 0.36 |
| 20 | 64 | 4.0 | 9.12 | 4.56 | 2.28 | 1.14 | 0.57 | 0.29 |
| 25 | 51.2 | 5.0 | 7.30 | 3.65 | 1.82 | 0.91 | 0.46 | 0.23 |
| 32 | 40 | 6.4 | 5.70 | 2.85 | 1.43 | 0.71 | 0.36 | 0.18 |
| 40 | 32 | 8.0 | 4.56 | 2.28 | 1.14 | 0.57 | 0.29 | 0.14 |
| 50 | 25.6 | 10.0 | 3.65 | 1.82 | 0.91 | 0.46 | 0.23 | 0.11 |
| 64 | 20 | 12.8 | 2.85 | 1.43 | 0.71 | 0.36 | 0.18 | 0.09 |
| 80 | 16 | 16.0 | 2.28 | 1.14 | 0.57 | 0.29 | 0.14 | 0.07 |
| 100 | 12.8 | 20.0 | 1.82 | 0.91 | 0.46 | 0.23 | 0.11 | 0.06 |
| 128 | 10 | 25.6 | 1.43 | 0.71 | 0.36 | 0.18 | 0.09 | 0.04 |
| 160 | 8 | 32.0 | 1.14 | 0.57 | 0.29 | 0.14 | 0.07 | 0.04 |
| 200 | 6.4 | 40.0 | 0.91 | 0.46 | 0.23 | 0.11 | 0.06 | 0.03 |
| 256 | 5 | 51.2 | 0.71 | 0.36 | 0.18 | 0.09 | 0.04 | 0.02 |
| 320 | 4 | 64.0 | 0.57 | 0.29 | 0.14 | 0.07 | 0.04 | 0.02 |
| 400 | 3.2 | 80.0 | 0.46 | 0.23 | 0.11 | 0.06 | 0.03 | 0.01 |
| 640 | 2 | 128.0 | 0.29 | 0.14 | 0.07 | 0.04 | 0.02 | 0.01 |
| 800 | 1.6 | 160.0 | 0.23 | 0.11 | 0.06 | 0.03 | 0.01 | 0.01 |
| 1280 | 1 | 256.0 | 0.14 | 0.07 | 0.04 | 0.02 | 0.01 | <0.01 |
| 1600 | 0.8 | 320.0 | 0.11 | 0.06 | 0.03 | 0.01 | 0.01 | <0.01 |
| 3200 | 0.4 | 640.0 | 0.06 | 0.03 | 0.01 | 0.01 | <0.01 | <0.01 |
| 6400 | 0.2 | 1,280.0 | 0.03 | 0.01 | 0.01 | <0.01 | <0.01 | <0.01 |
Data Rates at 128T
| cell values = Total data size (GB/s) | Time Resolution (s) | |||||||
|---|---|---|---|---|---|---|---|---|
fscrunch | fine chans per coarse | fine chan width kHz | 0.25 | 0.5 | 1.0 | 2.0 | 4.0 | 8.0 |
| 1 | 6400 | 0.2 | 161.69 | 80.85 | 40.42 | 20.21 | 10.11 | 5.05 |
| 2 | 3200 | 0.4 | 80.85 | 40.42 | 20.21 | 10.11 | 5.05 | 2.53 |
| 4 | 1600 | 0.8 | 40.42 | 20.21 | 10.11 | 5.05 | 2.53 | 1.26 |
| 5 | 1280 | 1.0 | 32.34 | 16.17 | 8.08 | 4.04 | 2.02 | 1.01 |
| 8 | 800 | 1.6 | 20.21 | 10.11 | 5.05 | 2.53 | 1.26 | 0.63 |
| 10 | 640 | 2.0 | 16.17 | 8.08 | 4.04 | 2.02 | 1.01 | 0.51 |
| 16 | 400 | 3.2 | 10.11 | 5.05 | 2.53 | 1.26 | 0.63 | 0.32 |
| 20 | 320 | 4.0 | 8.08 | 4.04 | 2.02 | 1.01 | 0.51 | 0.25 |
| 25 | 256 | 5.0 | 6.47 | 3.23 | 1.62 | 0.81 | 0.40 | 0.20 |
| 32 | 200 | 6.4 | 5.05 | 2.53 | 1.26 | 0.63 | 0.32 | 0.16 |
| 40 | 160 | 8.0 | 4.04 | 2.02 | 1.01 | 0.51 | 0.25 | 0.13 |
| 50 | 128 | 10.0 | 3.23 | 1.62 | 0.81 | 0.40 | 0.20 | 0.10 |
| 64 | 100 | 12.8 | 2.53 | 1.26 | 0.63 | 0.32 | 0.16 | 0.08 |
| 80 | 80 | 16.0 | 2.02 | 1.01 | 0.51 | 0.25 | 0.13 | 0.06 |
| 100 | 64 | 20.0 | 1.62 | 0.81 | 0.40 | 0.20 | 0.10 | 0.05 |
| 128 | 50 | 25.6 | 1.26 | 0.63 | 0.32 | 0.16 | 0.08 | 0.04 |
| 160 | 40 | 32.0 | 1.01 | 0.51 | 0.25 | 0.13 | 0.06 | 0.03 |
| 200 | 32 | 40.0 | 0.81 | 0.40 | 0.20 | 0.10 | 0.05 | 0.03 |
| 256 | 25 | 51.2 | 0.63 | 0.32 | 0.16 | 0.08 | 0.04 | 0.02 |
| 320 | 20 | 64.0 | 0.51 | 0.25 | 0.13 | 0.06 | 0.03 | 0.02 |
| 400 | 16 | 80.0 | 0.40 | 0.20 | 0.10 | 0.05 | 0.03 | 0.01 |
| 640 | 10 | 128.0 | 0.25 | 0.13 | 0.06 | 0.03 | 0.02 | 0.01 |
| 800 | 8 | 160.0 | 0.20 | 0.10 | 0.05 | 0.03 | 0.01 | 0.01 |
| 1280 | 5 | 256.0 | 0.13 | 0.06 | 0.03 | 0.02 | 0.010 | <0.01 |
| 1600 | 4 | 320.0 | 0.10 | 0.05 | 0.03 | 0.01 | 0.010 | <0.01 |
| 3200 | 2 | 640.0 | 0.05 | 0.03 | 0.01 | 0.010 | <0.01 | 0<0.01 |
| 6400 | 1 | 1,280.0 | 0.03 | 0.01 | 0.010 | <0.01 | 0<0.010 | <0.01 |