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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hello Nicolas,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Tagging<span class="apple-converted-space"> you</span>, as you helped in solving previous queries related to BBdev.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Any insights or guidance to help resolve this issue would be highly appreciated. If you need any more details, please feel free to ask.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Thank you for your time and assistance!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Microsoft GothicNeo",sans-serif;color:#4472C4;background:white">Best Regards</span></b><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">,<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Microsoft GothicNeo",sans-serif;color:#4472C4;background:white">Avijit Pandey</span></b><b><span style="font-family:"Arial",sans-serif;color:#222222"> </span></b><span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#222222"><br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#222222">Cloud SME | VoerEir AB</span><span style="font-family:"Calibri",sans-serif;color:#222222"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><a href="tel:+917506391870"><span style="font-size:10.0pt;font-family:"Microsoft GothicNeo",sans-serif;color:#0078D7">+91 9598570190</span></a></span><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#201F1E"><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Avijit Pandey <Avijit@voereir.com><br>
<b>Date: </b>Wednesday, 26 June 2024 at 16:52<br>
<b>To: </b>dev@dpdk.org <dev@dpdk.org><br>
<b>Subject: </b>Validation error in LDPC decoding<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">Hello Devs,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">I hope this email finds you well.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">I am reaching out to seek assistance regarding an issue I am facing in DPDK-BBdev utility, (v22.11).</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">I am performing some tests over a 5G Accelerator, ACC200 using DPDK-BBdev. I am creating custom test-vector files to generate custom load over the ACC200 device.
Currently, I am performing the LDPC decoding test through code block mode. I am creating the test-vector files with help of an open-source library, sionna (</span><a href="https://nvlabs.github.io/sionna/" title="https://nvlabs.github.io/sionna/"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">https://nvlabs.github.io/sionna/</span></a><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">).
Following are the steps to create <b>input0</b> and <b>output0</b> used in BBdev vector file. I have pulled out this code form the following reference:
</span><a href="https://github.com/NVlabs/sionna/discussions/54"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif">https://github.com/NVlabs/sionna/discussions/54</span></a><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-family:"Calibri",sans-serif">k, n, q_m = 32, 64, 2</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt;background:white"><span style="font-family:"Calibri",sans-serif;color:black">encoder = sn.fec.ldpc.LDPC5GEncoder(k, n, num_bits_per_symbol=q_m)<br>
c = encoder(u)</span><o:p></o:p></p>
<pre style="margin-left:36.0pt;background:white"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">e = c.numpy()</span><o:p></o:p></pre>
<pre style="margin-left:36.0pt;background:white"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">for i in range(e.shape[0]):<br> for j in flipped_positions[i]:<br> e[i][j] = 1.0 if e[i][j] == 0.0 else 0.0<br>e = tf.convert_to_tensor(e, np.float32)<br>decoder = sn.fec.ldpc.LDPC5GDecoder(encoder, hard_out=True, return_infobits=True, num_iter=20, cn_type="minsum")<br>w = decoder(2*e - 1)</span><o:p></o:p></pre>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">When I use
<b>w</b> as <b>input0</b> and <b>u</b> as <b>output0</b> in BBdev vector file I face following validation error:</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">Enqueue 32 reqs (phys 0x17ff80000) to reg 0x1180000000</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">Debug : MMIO Enqueue</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">TestCase check_dec_status_and_ordering() line 1936 failed: op_status (8) != expected_status (0)</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">TestCase validate_ldpc_dec_op() line 2328 failed (err -1): Checking status and ordering for decoder failed</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">TestCase latency_test_ldpc_dec() line 4645 failed (err -1): Validation failed!</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">727:get_stats_from_queues() Got stats on 0</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">762:rte_bbdev_stats_get() Retrieved stats of device 0</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">602:rte_bbdev_stop() Stopped device 0</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">TestCase [ 0] : validation_tc failed</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">647:rte_bbdev_close() Closed device 0</span></span><o:p></o:p></p>
<p class="MsoNormal"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal"><span class="apple-converted-space"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">Please find below the BBdev vector file created for the same
</span></span><o:p></o:p></p>
<p class="MsoNormal"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">op_type =</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">RTE_BBDEV_OP_LDPC_DEC</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">input0=</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">0xff01ff01,0x0101ff01,0x0101ff01,0x01010101,0x0101ff01,0xff010101,0x01010101,0x01010101,0xff01ff01,0x0101ff01,0xff010101,0xffffff01,0xff0101ff,0x0101ff01,0xffff0101,0xff0101ff</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">output0=</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">0xffffffff</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">basegraph=</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">2</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">z_c=</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">8</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">q_m=</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">2</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">n_filler=</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">28</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">n_cb=</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">300</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">e=</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">64</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">rv_index =</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">0</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">code_block_mode =</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">1</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">iter_max =</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">20</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">expected_iter_count =</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">20</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">op_flags =</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">RTE_BBDEV_LDPC_ITERATION_STOP_ENABLE</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black"> </span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">expected_status =</span></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span class="apple-converted-space"><span style="font-family:"Calibri",sans-serif;color:black">OK
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">I would like to understand what incorrect configuration am I using?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">Any insights or guidance to help resolve this issue would be highly appreciated. If you need any more details, please feel free to ask.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">Thank you for your time and assistance!</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-family:"Microsoft GothicNeo",sans-serif;color:#4472C4;background:white">Best Regards</span></b><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:black">,</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-family:"Microsoft GothicNeo",sans-serif;color:#4472C4;background:white">Avijit Pandey</span></b><b><span style="font-family:"Arial",sans-serif;color:#222222"> </span></b><span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#222222"><br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#222222">Cloud SME | VoerEir AB</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:black"><a href="tel:+917506391870"><span style="font-size:10.0pt;font-family:"Microsoft GothicNeo",sans-serif;color:#0078D7">+91 9598570190</span></a></span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:black"><a href="https://www.linkedin.com/in/avijit-pandey-603206154/" title=""https://www.linkedin.com/in/shivani-devshali-b2b6a359/""><span style="font-size:9.0pt;font-family:"Microsoft GothicNeo",sans-serif;color:blue;text-decoration:none"><img border="0" width="22" height="22" style="width:.2291in;height:.2291in" id="Picture_x0020_2" src="cid:image003.png@01DACBA0.C72B4AC0" alt="Title: LinkedIn - Description: image of LinkedIn icon"></span></a></span><span style="font-size:9.0pt;font-family:"Microsoft GothicNeo",sans-serif;color:#201F1E"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#222222"> </span><span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#222222"><img border="0" width="100" height="100" style="width:1.0416in;height:1.0416in" id="Picture_x0020_1" src="cid:image004.png@01DACBA0.C72B4AC0" alt="Image"></span><o:p></o:p></p>
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