Tag: smt

eigenvectors created by numpy.linalg.eig have dots instead of data

I want to calculate complex eigenvectors (Psi functions for shrodinger equation) for 20k*20k matrices, but always gets smth like this: [ 2.99009782e-09 -1.12381299e-08 -2.82346868e-08 …, 6.20967928e-34 -4.80675528e-34 -3.84848719e-35] [ 4.07337553e-08 -1.45976681e-07 -3.47961439e-07 …, 7.43558322e-34 -5.74815572e-34 -4.61317607e-35] [ 5.51921102e-07 -1.88491289e-06 -4.26000711e-06 …, 9.29535407e-34 -7.15304083e-34 -5.78846547e-35] As I understand it just replaces part of data with dots,… Read More eigenvectors created by numpy.linalg.eig have dots instead of data

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How to find and calculate common letters between words in pandas

I have a dataset with some words in it and I want to compare 2 columns and count common letters between them. For e.g I have: data = {‘Col_1’ : [‘Heaven’, ‘Jako’, ‘Sm’, ‘apizza’], ‘Col_2’ : [‘Heaven’, ‘Jakob’, ‘Smart’, ‘pizza’]} df = pd.DataFrame(data) | Col_1 | Col_2 | ——————- | Heaven | Heaven | |… Read More How to find and calculate common letters between words in pandas

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Adding multipart file as an attachment to an email in Spring Boot

I want to send an email from Spring Boot with a pdf attachment. I have received the pdf file as a multipart file from a POST call. Here’s my controller class so far (sendEmails method is included in emailService service): @PostMapping("/email") public ResponseEntity<?> sendEmail(@RequestParam("file") MultipartFile pdfFile, @RequestParam("email") String email) { boolean result = this.emailService.sendEmails(email, pdfFile);… Read More Adding multipart file as an attachment to an email in Spring Boot

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Why didn't x86 implement direct core-to-core messaging assembly/cpu instructions?

After serious development, CPUs gained many cores, gained distributed blocks of cores on multiple chiplets, numa systems, etc but still a piece of data has to pass through not only L1 cache (if on same core SMT) but also some atomic/mutex synchronization primitive procedure that is not accelerated by hardware. I wonder why didn’t Intel… Read More Why didn't x86 implement direct core-to-core messaging assembly/cpu instructions?

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