Cats vs Dogs tutorial fails at 'Creating .rec files'

[PoLabs]

Using mxnet in R on linux AMI, compiled for GPU.

val_ind <- c(1:length(cat_files))[!c(1:length(cat_files)) %in% train_ind]
val_data <- c(1:(length(val_ind) * 2))
val_data <- cbind(val_data, c(rep(0, length(val_ind)), rep(1, length(val_ind))))
val_data <- cbind(val_data, c(cat_files[val_ind], dog_files[val_ind]))
val_data <- val_data[sample(nrow(val_data)),]
write.table(val_data, "cats_dogs_val.lst", quote = FALSE, sep = "\t", row.names = FALSE, col.names = FALSE)
im2rec("cats_dogs_val.lst", "train_pad_224x224/", "cats_dogs_val.rec")

error:

[07:04:55] im2rec.cc:91: Keep origin image size
[07:04:55] im2rec.cc:102: Encoding is .jpg
[07:04:55] /home/ec2-user/src/mxnet/dmlc-core/include/dmlc/./logging.h:308: [07:04:55] src/io/input_split_base.cc:173: Check failed: files_.size() != 0U (0 vs. 0) Cannot find any files that matches the URI pattern cats_dogs_val.lst

stack trace returned two sets of 10 entries and

Error in mx.internal.im2rec(image_lst, root, output_rec, label_width,  : 
  [07:04:55] src/io/input_split_base.cc:173: Check failed: files_.size() != 0U (0 vs. 0) Cannot find any files that matches the URI pattern cats_dogs_val.lst

Session info:

R version 3.4.1 (2017-06-30)
Platform: x86_64-redhat-linux-gnu (64-bit)
Running under: Amazon Linux AMI 2017.09

Matrix products: default
BLAS/LAPACK: /usr/lib64/R/lib/libRblas.so

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C               LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8     LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                  LC_ADDRESS=C               LC_TELEPHONE=C             LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] abind_1.4-5    imager_0.40.2  magrittr_1.5   plyr_1.8.4     gdata_2.18.0   RCurl_1.95-4.8 bitops_1.0-6   bindrcpp_0.2   mxnet_0.12.0   mlbench_2.1-1 

loaded via a namespace (and not attached):
 [1] gtools_3.5.0       Rook_1.1-1         purrr_0.2.4        colorspace_1.3-2   htmltools_0.3.6    viridisLite_0.2.0  yaml_2.1.14        XML_3.98-1.9       rlang_0.1.2       
[10] glue_1.2.0         RColorBrewer_1.1-2 jpeg_0.1-8         bindr_0.1          stringr_1.2.0      munsell_0.4.3      gtable_0.2.0       visNetwork_2.0.1   htmlwidgets_0.9   
[19] codetools_0.2-15   knitr_1.17         DiagrammeR_0.9.2   Rcpp_0.12.13       readr_1.1.1        scales_0.5.0       jsonlite_1.5       rgexf_0.15.3       gridExtra_2.3     
[28] brew_1.0-6         bmp_0.3            ggplot2_2.2.1      hms_0.3            png_0.1-7          digest_0.6.12      stringi_1.1.5      dplyr_0.7.4        grid_3.4.1        
[37] influenceR_0.1.0   tools_3.4.1        lazyeval_0.2.1     tibble_1.3.4       tidyr_0.7.2        readbitmap_0.1-4   pkgconfig_2.0.1    downloader_0.4     assertthat_0.2.0  
[46] rstudioapi_0.7     viridis_0.4.0      R6_2.2.2           igraph_1.1.2       compiler_3.4.1 

[zhreshold]

Cannot find any files that matches the URI pattern cats_dogs_val.lst

Which means cats_dogs_val.lst is not found, either file not exists nor the path is not correct

[anirudhacharya]

@sandeep-krishnamurthy please add the label - "Question"