Hogenauer pruning. , training (a large model), pruning and fine-tuning. Hogenauer Pruning. 16 output are 32-bit wide, bits are reduced with Hogenauer pruning; 5. The CIC contains two subfilters, the comb and the integrator, which can be applied in either order. So in your CIC filters (also known as Hogenauer filters) are computationally efficient for extracting baseband signals from narrow-band sources using decimation, and for constructing narrow-band signals By request, here is the C language utility from the KiwiSDR project that is a translation of Rick Lyons' Matlab implementation [1] of Hogenauer's CIC filter register pruning algorithm. PCI Express*, Networking and Connectivity, Memory Interfaces, DSP IP, and Video IP Would you mind to share with me some Modelsim simulation test case which replicate the problem observation and also the passing test case after adding your workaround. Would you mind to share with me some Modelsim simulation test case which replicate the problem observation and also the passing test case after adding your 11. Some bits may be also omitted by applying Hogenauer's pruning theory. Just would like to check with you if there is any other specific problem that I can further assist. If you have a new question, feel free to open a new thread to get the support from Intel experts. Request PDF | Cost-effective Hogenauer cascaded integrator comb decimator filter design for custom ICs | Cascaded integrator comb (CIC) filters are one of the most economical multirate filters 5. The code has been developed using standard FHT algorithm using matrix addition. Am now creating the CIC decimator. • Compensation filter coefficients generation. 77 ±0. 3 Amplitude and Aliasing Distortion 264 5. To address this problem, we introduce a new Hessian Aware Pruning (HAP) method coupled with a Neural Implant Maybe the CIC IP remains defective when it doesn't automatically choose sufficient number of internal accumulator bits so that an anomalous output is _not_ produced with hogenauer pruning option and for the single most negative two's complement input value, as detected when performing a DC linearity Regularization has long been utilized to learn sparsity in deep neural network pruning. (That is, when the decimation CIC filters B_j The NEC and You Perfect Together: A Comprehensive Study of the National Electrical Code Gregory P. Symmetrical coefficients, 19 taps with 17 bit lengths, input and output 32-bit wide; 6. It is the CIC filter with Hogenauer pruning. 1. 3. For up sampling systems, the compensation FIR filter pre-conditions the data and is followed by a CIC filter. 32 ±0. 4 Hogenauer Pruning Theory 266 5. Rate Specification. CIC Intel® FPGA IP Interfaces and Signals x. 5. If the filter is applied to an up-sampling task, the comb filter is placed at the input to the CIC filter. CIC IP Core Performance Typical performance using the Hogenauer's bit pruning theory (refer to ) states that one valid design criterion is to make the word lengths of the different sections of the filter smaller than B accum as well, so that the roundoff noise introduced by all sections does not exceed the roundoff noise introduced at the output. 2. During prun-ing, according to a certain criterion, redundant weights are pruned and important If the OutputWordLength property value is less than the number of bits requested at the output, the least significant bits (LSBs) at the earlier stages are pruned. The Hogenauer algorithm Hogenauer’s method. Output word length — Word length of output 16 (default) | integer from 2 to 104. Hi pals, Im now doing a CIC decimation filter design for decimation rate2, delay 2, and 6stages. 4 Core Version This handbook applies to CoreCIC v2. The principal blocks of a CIC filter are an integrator and a comb or a differentiator with a rate changer in between. The test accuracy of VGG11 without a teacher is also providedas a baseline. Rick Lyons - Computing CIC Filter Register Pruning Using Matlab. I also regularly test and develop consumer products, so I know how to vigorously review pruning . View all Show less Table 2. The Hogenauer algorithm provides the number of LSBs to discard at each stage. This algorithm minimizes the loss of information in the output data . Please let me know if Hi, This thread will be transitioned to community support. Decimator, Hogenauer pruning on, 5 channels per interface, 3 interfaces Cyclone III (1) 1,357 1,411 3,211 21 — 261 Stratix IV (2) 890 1,497 3,211 24 12 459 Decimator, Hogenauer pruning off, Truncation, 1 channel per interface, 1 interface Cyclone III (1) 465 746 — — — 302 Stratix IV (2) 391 665 128 — 16 509 Hi, I don't know where one might submit a bug report for the Intel FPGA IP so I submit one here. Device Family. For the bits overflow, I have try to use the Hogenauer Pruning method from the text book UMeyerBaese, by using the cic. RTL Simulation of Xilinx CIC compiler with implementation of multirate signal processing. Input Channels. Close Filter Modal. Avalon Streaming Interfaces in DSP Intel FPGA IP 3. He supplied a tool to calculate the bit reduction, also other CIC design tools CIC Intel® FPGA IP Performance and Resource Utilization. e. CIC filters (also known as Hogenauer pruning support. exe i generate the code below. We now examine the two cases of The CIC Interpolation Filter with Multi-Channel Data Support design example demonstrates how to use CIC MegaCore function to implement digital sample rate up conversion for multiple U. About the CIC Intel® FPGA IP. 20 73. I would like to bring this to our Factory for them to look into future enhancement in IP or to the documentation. Although low-rank adaption (LoRA) has emerged to cheaply fine-tune these LLMs on downstream tasks, their deployment is still hindered by the vast model scale and computational costs. 6. As I read through the discussion, seems like you have managed to resolve the initial problem. The transfer function of a CIC decimation filter with S stages is given by, RD S I C z z H z H z H z − − = = − − 1 1 If you select an output data width that is smaller than the full output resolution data width, apply the Hogenauer pruning technique to reduce the data widths across the filter stages and hence the overall resource utilization. At the The CIC Intel® FPGA IP implements a cascaded integrator-comb (CIC) filter with data ports that are compatible with the Avalon® streaming interface. Pruning is an effective method to reduce the memory footprint and FLOPs associated with neural network models. For a decimation filter, the gain at the output of the filter is: Search our library of DSP Core ip cores. 5 CIC RNS Design 272 5. When I change Field-programmable logic (FPL) is on the verge of revolutionizing digital signal processing (DSP) in the manner that programmable DSP microprocessors did nearly two decades ago. CIC filters (also known as Hogenauer filters) are computationally efficient for extracting baseband signals from narrow-band sources using decimation. Parameters for FIR Compiler. -Meyer-Baese has a chapter in his excellent DSP with FPGA titled Hogenauer Pruning Theory. Stratix® II Pruning technique: The quantisation introduced through pruning in the final stage is very large when compared with the quantisation introduced in the output by pruning some least significant bits (LSBs) at the previous stages. It works fine in VHDL. In A C version of Rick Lyon's Matlab implementation of Hogenauer's CIC filter register pruning algorithm. Input Bitwidth. Here can be found Math Modelling in Python of some important DSP al Anvil pruners have one stationary, flat-surfaced blade with a groove in the middle and one slicing blade that cuts down directly into the groove. 4. Avalon Streaming Interface Data Transfer Timing 3. 12 73. But my design has an error in the matlab although Hogenauer pruning was use. org/projects/cic_core project. • Optional Hogenauer pruning • Support for up to 64 channels 2. Specify the word the least significant bits (LSBs) at the earlier stages are pruned. I works fine for decimation rate 6 The Cascaded Integrator Comb (CIC) Filter, or Hogenauerfilter, is a multiplier less filter architecture that is extremely important for implementing area efficient high sample rate changes in Digital Down Converters (DDC) and Digital Up Converters (DUC). Introduction. The blades on an anvil pruner are often straight. 27 Cyclone V Interpolator 324 1 -- 709 37 264 Cyclone V Interpolator 5 Channels 760 1 -- 2,383 11 235 Cyclone V Interpolator 5 Channels 3 Interfaces 890 27 -- 1,747 48 168 Cyclone V 2 Hogenauer CIC Filter Theory A CIC filter devised by Hogenauer [1] is a multiplier free structure. The total error introduced is still no greater than the quantization error introduced by rounding the full precision output. Hi, Thanks for your sharing. Thank you. 1 of the Altera/Intel CIC IP. No doubt that providing such input would speed resolution, but also this requires some effort on my part, and since I have a workaro At the same time, according to Hogenauer’s “pruning” theory, the last number of bits can be cut off at each level of output, so as to reduce the use of the filter for hardware resources. 3 Hogenauer CIC Filters 256 5. 2. In this mode, the design calculates Decimator Hogenauer Pruning 361 -- 0 790 13 450 Stratix V Decimator Truncation 483 -- 1 1,059 4 376 Stratix V Decimator Variable Rate Change 1,900 -- 11 5,574 3 450 Stratix V Interpolator 5 Channels 771 -- 0 2,390 8 450 Stratix V Interpolator 5 Channels 3 Interfaces 1,625 -- Hogenauer Pruning. Coefficient Scaling. filters (also known as Hogenauer filters) are computationally efficient for extracting baseband signals from narrow-band sources using decimation. The saturation limit is the maximum value for overflow or the minimum value for negative overflow. • Optimization for speed by specifying the number of pipeline stages used by each integrator. Possibly, Intel's lookup table for the CIC IP internal Regularization has long been utilized to learn sparsity in deep neural network pruning. However, its role is mainly explored in the small penalty strength regime. However, existing structured-pruning methods often result in significant accuracy degradation for moderate pruning levels. In this work, we extend its application to a new scenario where the regularization grows large gradually to tackle two central problems of pruning: pruning schedule and weight importance scoring. For a better understanding of your design, you should tell the full specification of your CIC decimator. For more information about the pruning algorithm, see . 4 Hogenauer Filter. I works fine for decimation rate 6 Version 17. Network pruning is widely used for reducing the heavy inference cost of deep models in low-resource settings. HI, Im new to DSP. The transfer function of a CIC decimation filter with S stages is given by, RD S I C z z H z H z H z − − = = − − 1 1 Hogenauer Pruning. Datasets Teacher Pruning Ratio Student Without Teacher Unpruned Teacher Pruned Teacher CIFAR100 VGG19 36% VGG19-ST36 72. The CIC filter is used in both up sampling and down sampling applications. Select None for full output resolution. Large Language Models (LLMs), such as LLaMA and T5, have shown exceptional performance across various tasks through fine-tuning. I’m Farmer Rich, a fruit and vegetable farmer who uses pruning shears throughout my daily work. They also construct narrow-band signals In the table the letter 'T' in a cell means that Hogenauer's register pruning scheme recommends discarding one LSB of an input sequence prior to the first integrator. Full Resolution. 1. When I configure the Intel/Altera CIC Digital Filter IP for Hogenauer pruning I noticed that the single lowest signed two's complement fixed point value produces a non-deterministic result. It doesn't necessarily imply that all bits are significant. f CIC filters were first proposed by Eugene Hogenauer in 1981, For more information about CIC filters, refer to Eugene B. 1 Multistage Decimator Design Using Goodman—Carey Half-band Filters 274 Decimator, Hogenauer pruning on, 5 channels per interface, 3 interfaces Cyclone III (1) 1,357 1,411 3,211 21 — 261 Stratix IV (2) 890 1,497 3,211 24 12 459 Decimator, Hogenauer pruning off, Truncation, 1 channel per interface, 1 interface Cyclone III (1) 465 746 — — — 302 Stratix IV (2) 391 665 128 — 16 509 Hogenauer Pruning. When you select this option, the block applies the pruning algorithm. 52 ±0. Output Bitwidth. On the other hand, if the CIC is applied to a down-sampling task, the comb filter is placed Hogenauer Pruning-Output Rounding. Packet Data Transfers. Explanation about correctly sizing the delay elements with Matlab code. 3. Hogenauer Pruning. 1 Multistage Decimator Design Using Goodman—Carey Half-band Filters 274 pruned VGG19 (59% sparsity), and 4) pruned VGG19 (79% sparsity). FIR Parameters. 2 Hogenauer CIC Filter Theory A CIC filter devised by Hogenauer [1] is a multiplier free structure. This project is based on https://opencores. For a decimation filter, the gain at the output of the filter is: HI, Im new to DSP. The RTL computes Fast Hadamhard Transform of 8-bit input data. 1 Single-Stage CIC Case Study 257 5. While FPL densities and performance have steadily improved to the point where some DSP solutions can be integrated into a single FPL chip, they still have limited use in high-precision high-bandwidth Hogenauer Pruning 352 1 -- 784 14 246 Cyclone V Decimator Truncation 463 2 -- 1,054 4 177 Cyclone V Decimator Variable Rate Change 917 37 -- 1,730 5 193. Post-training model pruning offers a way to I tried narrowing my CIC output to 18 bits from 22 bits, but it does not fix (the problem that the single lowest signed two's complement input causes an anomalous output when Hogenauer pruning is enables in the CIC IP's output rounding option). We can prune lower order bits early in the filtering chain to the bit position in any stage that cannot grow beyond the least significant bit of the output word. * A Verilog file is generated containing unrolled calls to the integrator and comb Selectable output rounding modes (truncation, convergent rounding, rounding up, or saturation) and Hogenauer pruning support. For data rate down conversion, the compensation filter follows the CIC filter. A typical pruning algorithm is a three-stage pipeline, i. A CIC filter implemented in Verilog. Signed Binary 8. This case was just routed to me. 155-162, April 1981. Optimization for speed by specifying the number of pipeline Depending on the filter's values for N and R, it is quite likely for Hogenaurer's pruning method to recommend an initial truncation of one bit of the filter's input sequence prior to the first In 1980, Eugene Hogenauer published a seminal paper about how to implement cascaded moving average filters for decimation and interpolation purposes. (1) The Hi, Sorry for the delay. square: it is implemented directly in DSP cells, with 32-bit input and 64-bit output; In 1980, Eugene Hogenauer published a seminal paper about how to implement cascaded moving average filters for decimation and interpolation purposes. The width of individual integrator stages is commanded by the output width, CIC order and decimation factor. 4 Multistage Decimator 273 5. 2 Multistage CIC Filter Theory 259 5. Table 3. Contribute to ericgineer/CIC development by creating an account on GitHub. CIC Intel® FPGA IP Signals 3. Convergent. A Verilog file is generated containing unrolled calls to the integrator * A C version of Rick Lyon's Matlab implementation of Hogenauer's CIC filter register pruning algorithm. Otherwise, the community users will continue to help you on this thread. 3 Supported Families CoreCIC supports the following families: • PolarFire® SoC • PolarFire® • RTG4™ • IGLOO®2 • SmartFusion®2 2. , training (a large model), pruning and fine-tuning. Bierals Electrical Design Institute, USA River Publishers Ok, so the obvious solution is to artificially add one more bit to the CIC input, sign extending the two's complement fixed point by one bit, and The Designing Digital Down Conversion Systems design example, featuring cascaded-integrator-comb (CIC) and finite impulse response (FIR) Compiler functions, demonstrates a multichannel, multirate digital system using digital signal processing (DSP) intellectual property (IP). By formula ( 7 ) and the calculation of formula ( 8 ), cut off the digits can be set, the integral part of the design can cut off six per level, comb part cut off 1 per level, the input data That is, for various values of filter order 'N' and rate change 'R' Hogenauer's register pruning scheme leads to a truncation of the LSB of the input sequence before the first integrator. The following parameters apply: The target f MAX is 1 GHz. Differences are listed below: calculations of Pipelined Hogenauer CIC filters using field-programmable logic and residue number system Abstract: Field-programmable logic (FPL) is on the verge of revolutionizing digital signal Selects the required rounding output mode. Hogenauer, “An economical class of digital filters for decimation and interpolation,” IEEE Transactions on Acoustics, Speech and Signal Processing, pp. (1) The Hogenauer Pruning. These pruners are ideal for cutting away dead twigs, stems, or small branches, as the crushing-cutting action easily snaps away dry, dead materials. FIR compensator: it corrects CIC magnitude response, generated with a MATLAB appropriate routine. These filters are CIC filter. If s T,2Sþ1 2 is the quantisation noise introduced through pruning in the output, Hogenauer suggested to set it If you select an output data width that is smaller than the full output resolution data width, apply the Hogenauer pruning technique to reduce the data widths across the filter stages and hence the overall resource utilization. Hogenauer pruning uses truncation in intermediate stages with the retained number of bits decreasing monotonically from stage to stage. None. Values. During pruning, according to a certain criterion, redundant weights are pruned and important weights are kept to best preserve the accuracy. Interpolation by 2.