TASK · FULL COSTS · COOLING
DEFINED TASK / COMPLETE MODEL
D043 · Spacecraft payload telemetry reduction
Both designs return the same required output fields, encoded response bytes and final state within this defined model. Each job contains 4 useful frames and repeats every 10 ms.
Input power: 0.360042453 → 0.359828537 W at 100 jobs/s. ΔQ̇ = (Eordinary − Eselected) / job period, for equal energy leaving in forms other than heat and equal stored-energy change. The input-power model includes the unchanged reference load and shared costs.
Ordinary → selected completion: 5,480.28 → 5,696.97 µs; required deadline 8,000 µs.
The changes included in this design.
- Serial lookup arithmetic
- Compact state layout
- Streaming boundary
- Clock gating with its cost charged
- Schema DMA interface with serialized traffic charged
The model compares the selected design with the best eligible conventional design in the study. Both include compatible improvements. The energy calculation counts logic, memory, clocks, connections, setup, idle time, resets and recovery once.
Compared designs and full energy breakdown
Selected: H_G7_COMPACT_D5_STREAM_CG::W_SCHEMA_DMA_1B_CG::BODY_POLICY
Strongest ordinary: O_BALANCED_COMPACT_D5_LOOKAHEAD_R4R1_BD32_STREAM_CG::W_SCHEMA_DMA_1B_CG::BODY_POLICY
Prior R6 selected policy: H_G7_COMPACT_D5_STREAM_CG::W_SCHEMA_DMA_1B_CG::BODY_POLICY. Extra saving against that policy: 0 µJ/job.
| Input-referred term | Strong ordinary (µJ) | Selected (µJ) |
|---|---|---|
| common common host control W | 222.222222 | 222.222222 |
| common common memory W | 55.555556 | 55.555556 |
| common common clock sensor W | 111.111111 | 111.111111 |
| common plant or external load W | 2,222.222222 | 2,222.222222 |
| installed FPGA shell | 888.888889 | 888.888889 |
| generic accelerator clock distribution | 48.964696 | 50.878791 |
| arithmetic resource leak | 3.627356 | 1.593578 |
| cache leak | 0 | 0 |
| allocated program data memory leak | 2.913044 | 20.8654 |
| additional array port capacity tariff | 2.913044 | 0 |
| occupied CPU units | 13.446 | 13.408 |
| DSP products | 0 | 0 |
| adder bits | 0.003186 | 0.003186 |
| nonadder LUT bits | 0.01846 | 0.01846 |
| divider sequence | 0.001451 | 0.001451 |
| register accesses | 14.13481 | 0.76342 |
| accelerator control | 0.138543 | 0.02592 |
| internal data instruction cache traffic | 8.99216 | 5.34704 |
| cache valid initialization | 0 | 0 |
| conditional original B core dynamic | 0 | 0 |
| conditional original B clock standby | 0 | 0 |
| external canonical wrapper CPU | 0.010667 | 0.010667 |
| external request commit readback | 0.781 | 0.781 |
| cold host preparation | 0 | 0 |
| cold logic program cache preparation | 0 | 0 |
| R6 wrapper logic | 0.42608 | 0.42608 |
| R6 wrapper internal fixed transfers | 0.054191 | 0.054191 |
| R6 wrapper resource leak | 0.863644 | 0.863644 |
| R6 wrapper memory leak | 0.339389 | 0.339389 |
| R6 wrapper extra port leak | 0 | 0 |
| R6 wrapper clock | 2.796807 | 2.905152 |
| R7 lookahead FIFO additional port | 0 | 0 |
| Total | 3,600.424528 | 3,598.285368 |
Exact totals: 64807641503/18000000000000 J versus 64769136623/18000000000000 J. Source models use declared physical coefficients.
Operating conditions, uncertainty and fitting the design into a product
One reference controller/processor, shared memory, sensor/clock rails and the stated unchanged external load; compute-specific increments and added resources are priced by the R5 common cost-law artifact.
Supply efficiency in the model: 90%. Shared loads and loads that stay unchanged: common host control W 0.02 W; common memory W 0.005 W; common clock sensor W 0.01 W; plant or external load W 0.2 W.
- Runtime-visible event/retention policy and exact required output/raw-review horizon
- Input byte/arrival traces with events, pre/post-trigger context and metadata format
- Queue capacity, throughput, timestamps, continuity, wake/stall/retry and recovery semantics
- Cost placement before a real constrained data edge; exact accepted reduction and ordinary comparator
The portfolio has 13 savings at the main modeled point, 100 ties using the conventional fallback, and 7 unmatched comparisons across 120 references. Positive advantages passing both the strict and combined tighter uncertainty tests: 0.
APPLICATION COVERAGE
The comparison tasks.
| Comparison job | Input energy saved per job | Job rate | Heat reduction under the stated conditions | Outcome at the main modeled point |
|---|---|---|---|---|
| D041 · Satellite communications PA breadboard | A matching baseline and eligible candidate are still needed | 1,000/s | Open comparison | Unmatched |
| D042 · Satellite flight-computer kernel | 0 µJ | 100/s | 0 mW | Conventional fallback: same energy |
| D043 · Spacecraft payload telemetry reduction | 2.13916 µJ | 100/s | 0.213916 mW | Selected changes costed together |
| D044 · Satellite ground characterization/export | 0 µJ | 1/s | 0 mW | Conventional fallback: same energy |
| D045 · Spacecraft power-conversion electronics | 0 µJ | 1,000/s | 0 mW | Conventional fallback: same energy |
| D046 · Spacecraft thermal-work scheduler | 0 µJ | 10/s | 0 mW | Conventional fallback: same energy |
| D047 · Ground-station passive receiver pipeline | 0 µJ | 100/s | 0 mW | Conventional fallback: same energy |
These are computational models of defined tasks relevant to this application. Each selected design includes the compatible changes listed in its comparison.
YOUR PRODUCT’S THERMAL INPUTS
Calculate the cooling mass.
Use the heat carried by this cooling path and the weight of its installed parts, including added hardware. The comparison task’s average power change contributes to that total device calculation.
Chosen model: net radiative flux = εσ(Tsurface⁴ − Tsink⁴) − absorbed external flux.
Enter the product’s heat-path and part-weight values to calculate the cooling change.
Explore the calculation.
Heat energy = input energy − energy leaving in forms other than heat − change in stored energy.
All 120 reference rows, exact values, complete ledgers and source pins →All product thermal budgets and FI tools →