diff --git a/cpp/examples/parquet_io/common.hpp b/cpp/examples/parquet_io/common.hpp index f4e5757412a..25f81022d07 100644 --- a/cpp/examples/parquet_io/common.hpp +++ b/cpp/examples/parquet_io/common.hpp @@ -31,6 +31,8 @@ #include #include +#include + #include #include #include @@ -146,9 +148,11 @@ inline void check_identical_tables(cudf::table_view const& lhs_table, // No exception thrown, check indices auto const valid = indices->size() == 0; - std::cout << "Transcoding valid: " << std::boolalpha << valid << std::endl; + fmt::print( + fmt::emphasis::bold | fg(fmt::color::green_yellow), "Transcoding valid: {}\n", valid); } catch (std::exception& e) { std::cerr << e.what() << std::endl << std::endl; - throw std::runtime_error("Transcoding valid: false\n"); + throw std::runtime_error( + fmt::format(fmt::emphasis::bold | fg(fmt::color::red), "Transcoding valid: false\n")); } } diff --git a/cpp/examples/parquet_io/parquet_io.cpp b/cpp/examples/parquet_io/parquet_io.cpp index c981928e8f2..06505016ab9 100644 --- a/cpp/examples/parquet_io/parquet_io.cpp +++ b/cpp/examples/parquet_io/parquet_io.cpp @@ -126,18 +126,16 @@ int main(int argc, char const** argv) // Read input parquet file // We do not want to time the initial read time as it may include // time for nvcomp, cufile loading and RMM growth - std::cout << std::endl << "Reading " << input_filepath << "..." << std::endl; - std::cout << "Note: Not timing the initial parquet read as it may include\n" - "times for nvcomp, cufile loading and RMM growth." - << std::endl - << std::endl; + fmt::print("\nReading {}...", input_filepath); + fmt::print( + "Note: Not timing the initial parquet read as it may include\n" + "times for nvcomp, cufile loading and RMM growth.\n\n"); auto [input, metadata] = read_parquet(input_filepath); // Status string to indicate if page stats are set to be written or not auto page_stat_string = (page_stats.has_value()) ? "page stats" : "no page stats"; // Write parquet file with the specified encoding and compression - std::cout << "Writing " << output_filepath << " with encoding, compression and " - << page_stat_string << ".." << std::endl; + fmt::print("Writing {} with encoding, compression and {}..\n", output_filepath, page_stat_string); // `timer` is automatically started here cudf::examples::timer timer; @@ -145,7 +143,7 @@ int main(int argc, char const** argv) timer.print_elapsed_millis(); // Read the parquet file written with encoding and compression - std::cout << "Reading " << output_filepath << "..." << std::endl; + fmt::print("Reading {}...\n", output_filepath); // Reset the timer timer.reset(); diff --git a/cpp/examples/parquet_io/parquet_io_multithreaded.cpp b/cpp/examples/parquet_io/parquet_io_multithreaded.cpp index 5c9be0892cb..361683c0e9e 100644 --- a/cpp/examples/parquet_io/parquet_io_multithreaded.cpp +++ b/cpp/examples/parquet_io/parquet_io_multithreaded.cpp @@ -73,7 +73,7 @@ struct read_fn { struct write_fn { std::string const& output_path; - std::vector const& tables; + std::vector const& table_views; cudf::io::column_encoding const encoding; cudf::io::compression_type const compression; std::optional const stats_level; @@ -85,10 +85,10 @@ struct write_fn { // write the data for inspection auto sink_info = cudf::io::sink_info(output_path + "/table_" + std::to_string(thread_id) + ".parquet"); - auto builder = cudf::io::parquet_writer_options::builder(sink_info, tables[thread_id]->view()) + auto builder = cudf::io::parquet_writer_options::builder(sink_info, table_views[thread_id]) .compression(compression) .stats_level(stats_level.value_or(cudf::io::statistics_freq::STATISTICS_NONE)); - auto table_metadata = cudf::io::table_input_metadata{tables[thread_id]->view()}; + auto table_metadata = cudf::io::table_input_metadata{table_views[thread_id]}; std::for_each(table_metadata.column_metadata.begin(), table_metadata.column_metadata.end(), @@ -246,8 +246,8 @@ int main(int argc, char const** argv) return tables; }; - // Lambda function to setup and launch multithread parquet write - auto const write_parquet_multithreaded = [&](std::vector const& tables) { + // Lambda function to setup and launch multithreaded parquet writes + auto const write_parquet_multithreaded = [&](std::vector const& tables) { // Tasks to read each parquet file std::vector write_tasks; write_tasks.reserve(thread_count); @@ -271,23 +271,33 @@ int main(int argc, char const** argv) // Read the parquet files with multiple threads { - std::cout << "Note: Not timing the initial parquet read as it may include\n" - "times for nvcomp, cufile loading and RMM growth." - << std::endl - << std::endl; + fmt::print( + "Note: Not timing the initial parquet read as it may include\n" + "times for nvcomp, cufile loading and RMM growth.\n\n"); // Tables read by each thread auto const tables = read_parquet_multithreaded(input_files); // In case some kernels are still running on the default stre default_stream.synchronize(); - // Write parquet file with the specified encoding and compression + // Construct a vector of table views for write_parquet_multithreaded + auto const table_views = [&tables]() { + std::vector table_views; + table_views.reserve(tables.size()); + + std::transform( + tables.cbegin(), tables.cend(), std::back_inserter(table_views), [](auto const& tbl) { + return tbl->view(); + }); + return table_views; + }(); + + // Write tables to parquet with the specified encoding and compression auto const page_stat_string = (page_stats.has_value()) ? "page stats" : "no page stats"; - std::cout << "Writing at: " << output_path << " with encoding, compression and " - << page_stat_string << ".." << std::endl; + fmt::print( + "Writing at: {} with encoding, compression and {}..\n", output_path, page_stat_string); - // Write tables using multiple threads cudf::examples::timer timer; - write_parquet_multithreaded(tables); + write_parquet_multithreaded(table_views); // In case some kernels are still running on the default stream default_stream.synchronize(); // Print elapsed time @@ -296,7 +306,7 @@ int main(int argc, char const** argv) // Re-read the same parquet files with multiple threads { - std::cout << "Reading for the second time using " << thread_count << " threads..." << std::endl; + fmt::print("Reading for the second time using {} threads...\n", thread_count); cudf::examples::timer timer; auto const input_table = concatenate_tables(read_parquet_multithreaded(input_files), default_stream); @@ -305,7 +315,7 @@ int main(int argc, char const** argv) // Print elapsed time and peak memory timer.print_elapsed_millis(); - std::cout << "Reading transcoded files using " << thread_count << " threads..." << std::endl; + fmt::print("Reading transcoded files using {} threads...\n", thread_count); timer.reset(); auto const transcoded_table = concatenate_tables( read_parquet_multithreaded(extract_input_files(output_path)), default_stream); @@ -314,7 +324,7 @@ int main(int argc, char const** argv) // Print elapsed time and peak memory timer.print_elapsed_millis(); - std::cout << "Peak memory: " << (stats_mr.get_bytes_counter().peak / 1048576.0) << " MB\n\n"; + fmt::print("Peak memory: {} MB\n\n", (stats_mr.get_bytes_counter().peak / 1048576.0)); // Check for validity check_identical_tables(input_table->view(), transcoded_table->view());